39256993 has 2 divisors, whose sum is σ = 39256994. Its totient is φ = 39256992.

The previous prime is 39256969. The next prime is 39257003. The reversal of 39256993 is 39965293.

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., 29844369 + 9412624 = 5463^2 + 3068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39256993 is a prime.

It is a super-2 number, since 2×39256993² = 3082222998804098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39256913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19628496 + 19628497.

It is an arithmetic number, because the mean of its divisors is an integer number (19628497).

Almost surely, 2^39256993 is an apocalyptic number.

It is an amenable number.

39256993 is a deficient number, since it is larger than the sum of its proper divisors (1).

39256993 is an equidigital number, since it uses as much as digits as its factorization.

39256993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 46.

The square root of 39256993 is about 6265.5401203727. The cubic root of 39256993 is about 339.8644009448.

The spelling of 39256993 in words is "thirty-nine million, two hundred fifty-six thousand, nine hundred ninety-three".