39624961 has 2 divisors, whose sum is σ = 39624962. Its totient is φ = 39624960.

The previous prime is 39624917. The next prime is 39624997. The reversal of 39624961 is 16942693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36180225 + 3444736 = 6015^2 + 1856^2 .

It is a cyclic number.

It is not a de Polignac number, because 39624961 - 2⁷ = 39624833 is a prime.

It is not a weakly prime, because it can be changed into another prime (39627961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19812480 + 19812481.

It is an arithmetic number, because the mean of its divisors is an integer number (19812481).

Almost surely, 2^39624961 is an apocalyptic number.

It is an amenable number.

39624961 is a deficient number, since it is larger than the sum of its proper divisors (1).

39624961 is an equidigital number, since it uses as much as digits as its factorization.

39624961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 39624961 is about 6294.8360582306. The cubic root of 39624961 is about 340.9229852190.

The spelling of 39624961 in words is "thirty-nine million, six hundred twenty-four thousand, nine hundred sixty-one".