39446969 has 2 divisors, whose sum is σ = 39446970. Its totient is φ = 39446968.

The previous prime is 39446947. The next prime is 39446977. The reversal of 39446969 is 96964493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38291344 + 1155625 = 6188^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 39446969 - 2⁸ = 39446713 is a prime.

It is a super-2 number, since 2×39446969² = 3112126726573922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39446369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19723484 + 19723485.

It is an arithmetic number, because the mean of its divisors is an integer number (19723485).

Almost surely, 2^39446969 is an apocalyptic number.

It is an amenable number.

39446969 is a deficient number, since it is larger than the sum of its proper divisors (1).

39446969 is an equidigital number, since it uses as much as digits as its factorization.

39446969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 50.

The square root of 39446969 is about 6280.6822081682. The cubic root of 39446969 is about 340.4117531681.

The spelling of 39446969 in words is "thirty-nine million, four hundred forty-six thousand, nine hundred sixty-nine".