39932969 has 2 divisors, whose sum is σ = 39932970. Its totient is φ = 39932968.

The previous prime is 39932941. The next prime is 39932987. The reversal of 39932969 is 96923993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33235225 + 6697744 = 5765^2 + 2588^2 .

It is an emirp because it is prime and its reverse (96923993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39932969 - 2¹² = 39928873 is a prime.

It is a super-2 number, since 2×39932969² = 3189284026309922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39932069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19966484 + 19966485.

It is an arithmetic number, because the mean of its divisors is an integer number (19966485).

Almost surely, 2^39932969 is an apocalyptic number.

It is an amenable number.

39932969 is a deficient number, since it is larger than the sum of its proper divisors (1).

39932969 is an equidigital number, since it uses as much as digits as its factorization.

39932969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708588, while the sum is 50.

The square root of 39932969 is about 6319.2538325343. The cubic root of 39932969 is about 341.8040468621.

The spelling of 39932969 in words is "thirty-nine million, nine hundred thirty-two thousand, nine hundred sixty-nine".