45879909 has 4 divisors (see below), whose sum is σ = 61173216. Its totient is φ = 30586604.

The previous prime is 45879881. The next prime is 45879913. The reversal of 45879909 is 90997854.

It is a happy number.

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 cyclic number.

It is not a de Polignac number, because 45879909 - 2⁵ = 45879877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45879109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7646649 + ... + 7646654.

It is an arithmetic number, because the mean of its divisors is an integer number (15293304).

Almost surely, 2^45879909 is an apocalyptic number.

It is an amenable number.

45879909 is a deficient number, since it is larger than the sum of its proper divisors (15293307).

45879909 is a wasteful number, since it uses less digits than its factorization.

45879909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15293306.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 45879909 is about 6773.4709713706. The cubic root of 45879909 is about 357.9927097129.

The spelling of 45879909 in words is "forty-five million, eight hundred seventy-nine thousand, nine hundred nine".