45912139 has 16 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 36156960.

The previous prime is 45912131. The next prime is 45912149. The reversal of 45912139 is 93121954.

It is not a de Polignac number, because 45912139 - 2³ = 45912131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45912131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20694 + ... + 22804.

It is an arithmetic number, because the mean of its divisors is an integer number (3548160).

Almost surely, 2^45912139 is an apocalyptic number.

45912139 is a deficient number, since it is larger than the sum of its proper divisors (10858421).

45912139 is a wasteful number, since it uses less digits than its factorization.

45912139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its digits is 9720, while the sum is 34.

The square root of 45912139 is about 6775.8496884155. The cubic root of 45912139 is about 358.0765183963.

The spelling of 45912139 in words is "forty-five million, nine hundred twelve thousand, one hundred thirty-nine".