38639996 has 18 divisors (see below), whose sum is σ = 71368920. Its totient is φ = 18302472.

The previous prime is 38639987. The next prime is 38640001. The reversal of 38639996 is 69993683.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11936 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (3964940).

Almost surely, 2^38639996 is an apocalyptic number.

It is an amenable number.

38639996 is a deficient number, since it is larger than the sum of its proper divisors (32728924).

38639996 is a wasteful number, since it uses less digits than its factorization.

38639996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26801 (or 26780 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 53.

The square root of 38639996 is about 6216.1077854233. The cubic root of 38639996 is about 338.0744557798.

The spelling of 38639996 in words is "thirty-eight million, six hundred thirty-nine thousand, nine hundred ninety-six".