39690344 has 16 divisors (see below), whose sum is σ = 76431300. Its totient is φ = 19308672.

The previous prime is 39690283. The next prime is 39690347. The reversal of 39690344 is 44309693.

It can be written as a sum of positive squares in 2 ways, for example, as 32604100 + 7086244 = 5710^2 + 2662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39690298 and 39690307.

It is not an unprimeable number, because it can be changed into a prime (39690347) 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, 66749 + ... + 67340.

Almost surely, 2^39690344 is an apocalyptic number.

It is an amenable number.

39690344 is a deficient number, since it is larger than the sum of its proper divisors (36740956).

39690344 is a wasteful number, since it uses less digits than its factorization.

39690344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134132 (or 134128 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 39690344 is about 6300.0273015281. The cubic root of 39690344 is about 341.1103950238.

The spelling of 39690344 in words is "thirty-nine million, six hundred ninety thousand, three hundred forty-four".