39404713 has 4 divisors (see below), whose sum is σ = 39417300. Its totient is φ = 39392128.

The previous prime is 39404683. The next prime is 39404737. The reversal of 39404713 is 31740493.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31740493 = 43 ⋅738151.

It can be written as a sum of positive squares in 2 ways, for example, as 16670889 + 22733824 = 4083^2 + 4768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39404713 is a prime.

It is a super-2 number, since 2×39404713² = 3105462813224738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39404513) 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 in 3 ways as a sum of consecutive naturals, for example, 2481 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (9854325).

Almost surely, 2^39404713 is an apocalyptic number.

It is an amenable number.

39404713 is a deficient number, since it is larger than the sum of its proper divisors (12587).

39404713 is an equidigital number, since it uses as much as digits as its factorization.

39404713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 39404713 is about 6277.3173410303. The cubic root of 39404713 is about 340.2901588799.

The spelling of 39404713 in words is "thirty-nine million, four hundred four thousand, seven hundred thirteen".