399048738 has 16 divisors (see below), whose sum is σ = 870651936. Its totient is φ = 120923840.

The previous prime is 399048719. The next prime is 399048739. The reversal of 399048738 is 837840993.

It is not an unprimeable number, because it can be changed into a prime (399048739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3023031 + ... + 3023162.

It is an arithmetic number, because the mean of its divisors is an integer number (54415746).

Almost surely, 2^399048738 is an apocalyptic number.

399048738 is an abundant number, since it is smaller than the sum of its proper divisors (471603198).

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

399048738 is a wasteful number, since it uses less digits than its factorization.

399048738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046209.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 399048738 is about 19976.2042941095. The cubic root of 399048738 is about 736.2217562427.

The spelling of 399048738 in words is "three hundred ninety-nine million, forty-eight thousand, seven hundred thirty-eight".