39434977 has 2 divisors, whose sum is σ = 39434978. Its totient is φ = 39434976.

The previous prime is 39434971. The next prime is 39435029. The reversal of 39434977 is 77943493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21150801 + 18284176 = 4599^2 + 4276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39434977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39434971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19717488 + 19717489.

It is an arithmetic number, because the mean of its divisors is an integer number (19717489).

Almost surely, 2^39434977 is an apocalyptic number.

It is an amenable number.

39434977 is a deficient number, since it is larger than the sum of its proper divisors (1).

39434977 is an equidigital number, since it uses as much as digits as its factorization.

39434977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 46.

The square root of 39434977 is about 6279.7274622391. The cubic root of 39434977 is about 340.3772542650.

The spelling of 39434977 in words is "thirty-nine million, four hundred thirty-four thousand, nine hundred seventy-seven".