45913639 has 2 divisors, whose sum is σ = 45913640. Its totient is φ = 45913638.

The previous prime is 45913631. The next prime is 45913643. The reversal of 45913639 is 93631954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45913639 - 2³ = 45913631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45913631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22956819 + 22956820.

It is an arithmetic number, because the mean of its divisors is an integer number (22956820).

Almost surely, 2^45913639 is an apocalyptic number.

45913639 is a deficient number, since it is larger than the sum of its proper divisors (1).

45913639 is an equidigital number, since it uses as much as digits as its factorization.

45913639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 45913639 is about 6775.9603747366. The cubic root of 45913639 is about 358.0804179381.

The spelling of 45913639 in words is "forty-five million, nine hundred thirteen thousand, six hundred thirty-nine".