45146639 has 2 divisors, whose sum is σ = 45146640. Its totient is φ = 45146638.

The previous prime is 45146609. The next prime is 45146657. The reversal of 45146639 is 93664154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45146639 - 2²⁰ = 44098063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45146609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22573319 + 22573320.

It is an arithmetic number, because the mean of its divisors is an integer number (22573320).

Almost surely, 2^45146639 is an apocalyptic number.

45146639 is a deficient number, since it is larger than the sum of its proper divisors (1).

45146639 is an equidigital number, since it uses as much as digits as its factorization.

45146639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 45146639 is about 6719.1248686120. The cubic root of 45146639 is about 356.0752665628.

The spelling of 45146639 in words is "forty-five million, one hundred forty-six thousand, six hundred thirty-nine".