38979906 has 32 divisors (see below), whose sum is σ = 93788160. Its totient is φ = 10550736.

The previous prime is 38979901. The next prime is 38979937. The reversal of 38979906 is 60997983.

It is not an unprimeable number, because it can be changed into a prime (38979901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23626 + ... + 25221.

It is an arithmetic number, because the mean of its divisors is an integer number (2930880).

Almost surely, 2^38979906 is an apocalyptic number.

38979906 is an abundant number, since it is smaller than the sum of its proper divisors (54808254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38979906 is a wasteful number, since it uses less digits than its factorization.

38979906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48878.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 38979906 is about 6243.3889835569. The cubic root of 38979906 is about 339.0628924132.

The spelling of 38979906 in words is "thirty-eight million, nine hundred seventy-nine thousand, nine hundred six".