39496813 has 2 divisors, whose sum is σ = 39496814. Its totient is φ = 39496812.

The previous prime is 39496781. The next prime is 39496823. The reversal of 39496813 is 31869493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35010889 + 4485924 = 5917^2 + 2118^2 .

It is a cyclic number.

It is not a de Polignac number, because 39496813 - 2⁵ = 39496781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39496813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39496823) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19748406 + 19748407.

It is an arithmetic number, because the mean of its divisors is an integer number (19748407).

Almost surely, 2^39496813 is an apocalyptic number.

It is an amenable number.

39496813 is a deficient number, since it is larger than the sum of its proper divisors (1).

39496813 is an equidigital number, since it uses as much as digits as its factorization.

39496813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 39496813 is about 6284.6489957674. The cubic root of 39496813 is about 340.5550708284. Note that the first 3 decimals are identical.

The spelling of 39496813 in words is "thirty-nine million, four hundred ninety-six thousand, eight hundred thirteen".