45985439 has 2 divisors, whose sum is σ = 45985440. Its totient is φ = 45985438.

The previous prime is 45985427. The next prime is 45985507. The reversal of 45985439 is 93458954.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45985439 is a prime.

It is a super-2 number, since 2×45985439² = 4229321200045442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45985393 and 45985402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45985139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22992719 + 22992720.

It is an arithmetic number, because the mean of its divisors is an integer number (22992720).

Almost surely, 2^45985439 is an apocalyptic number.

45985439 is a deficient number, since it is larger than the sum of its proper divisors (1).

45985439 is an equidigital number, since it uses as much as digits as its factorization.

45985439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 47.

The square root of 45985439 is about 6781.2564470015. The cubic root of 45985439 is about 358.2669767639.

The spelling of 45985439 in words is "forty-five million, nine hundred eighty-five thousand, four hundred thirty-nine".