Search a number
-
+
88416409 = 94032
BaseRepresentation
bin1010100010100…
…10000010011001
320011101000111211
411101102002121
5140113311114
612435023121
72122345534
oct521220231
9204330454
1088416409
11459aa614
122573aaa1
1315419203
14ba57a1b
157b676c4
hex5452099

88416409 has 3 divisors (see below), whose sum is σ = 88425813. Its totient is φ = 88407006.

The previous prime is 88416407. The next prime is 88416413. The reversal of 88416409 is 90461488.

The square root of 88416409 is 9403.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 88416409 - 21 = 88416407 is a prime.

It is a super-2 number, since 2×884164092 = 15634922760910562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88416403) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4702 + ... + 14104.

It is an arithmetic number, because the mean of its divisors is an integer number (29475271).

Almost surely, 288416409 is an apocalyptic number.

88416409 is the 9403-rd square number.

88416409 is the 4702-nd centered octagonal number.

It is an amenable number.

88416409 is a deficient number, since it is larger than the sum of its proper divisors (9404).

88416409 is an frugal number, since it uses more digits than its factorization.

88416409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806 (or 9403 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The cubic root of 88416409 is about 445.4964941993.

The spelling of 88416409 in words is "eighty-eight million, four hundred sixteen thousand, four hundred nine".

Divisors: 1 9403 88416409