398727952 has 80 divisors (see below), whose sum is σ = 933940224. Its totient is φ = 161280000.

The previous prime is 398727941. The next prime is 398727961. The reversal of 398727952 is 259727893.

It is a super-2 number, since 2×398727952² = 317967959412228608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398727952.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140952 + ... + 143752.

Almost surely, 2^398727952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398727952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466970112).

398727952 is an abundant number, since it is smaller than the sum of its proper divisors (535212272).

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

398727952 is a wasteful number, since it uses less digits than its factorization.

398727952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888 (or 2882 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 52.

The square root of 398727952 is about 19968.1734768105. The cubic root of 398727952 is about 736.0244261742.

The spelling of 398727952 in words is "three hundred ninety-eight million, seven hundred twenty-seven thousand, nine hundred fifty-two".