Search a number
-
+
109019401 = 587185723
BaseRepresentation
bin1100111111110…
…00000100001001
321121010202111121
412133320010021
5210402110101
614452355241
72462435551
oct637700411
9247122447
10109019401
11565a1987
1230615b21
1319780c2a
141069c161
1598870a1
hex67f8109

109019401 has 4 divisors (see below), whose sum is σ = 109205712. Its totient is φ = 108833092.

The previous prime is 109019363. The next prime is 109019429. The reversal of 109019401 is 104910901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104910901 = 137765773.

It is a cyclic number.

It is not a de Polignac number, because 109019401 - 211 = 109017353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109019431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92275 + ... + 93448.

It is an arithmetic number, because the mean of its divisors is an integer number (27301428).

Almost surely, 2109019401 is an apocalyptic number.

It is an amenable number.

109019401 is a deficient number, since it is larger than the sum of its proper divisors (186311).

109019401 is an equidigital number, since it uses as much as digits as its factorization.

109019401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186310.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 109019401 is about 10441.2356069576. The cubic root of 109019401 is about 477.7139576414.

It can be divided in two parts, 10901 and 9401, that added together give a palindrome (20302).

The spelling of 109019401 in words is "one hundred nine million, nineteen thousand, four hundred one".

Divisors: 1 587 185723 109019401