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2440109 = 7348587
BaseRepresentation
bin1001010011101110101101
311120222012102
421103232231
51111040414
6124144445
726512010
oct11235655
94528172
102440109
111417321
12998125
13675869
14477377
15332ede

2440109 has 4 divisors (see below), whose sum is σ = 2788704. Its totient is φ = 2091516.

The previous prime is 2440091. The next prime is 2440111. The reversal of 2440109 is 9010442.

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.

It is a de Polignac number, because none of the positive numbers 2k-2440109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440709) 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, 174287 + ... + 174300.

It is an arithmetic number, because the mean of its divisors is an integer number (697176).

22440109 is an apocalyptic number.

It is an amenable number.

2440109 is a deficient number, since it is larger than the sum of its proper divisors (348595).

2440109 is an equidigital number, since it uses as much as digits as its factorization.

2440109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348594.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2440109 is about 1562.0848248415. The cubic root of 2440109 is about 134.6283145968.

The spelling of 2440109 in words is "two million, four hundred forty thousand, one hundred nine".

Divisors: 1 7 348587 2440109