398915272 has 48 divisors (see below), whose sum is σ = 874110960. Its totient is φ = 170172576.

The previous prime is 398915269. The next prime is 398915303. The reversal of 398915272 is 272519893.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86743 + ... + 91225.

It is an arithmetic number, because the mean of its divisors is an integer number (18210645).

Almost surely, 2^398915272 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 398915272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437055480).

398915272 is an abundant number, since it is smaller than the sum of its proper divisors (475195688).

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

398915272 is a wasteful number, since it uses less digits than its factorization.

398915272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730 (or 4719 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 398915272 is about 19972.8633901101. The cubic root of 398915272 is about 736.1396680829.

The spelling of 398915272 in words is "three hundred ninety-eight million, nine hundred fifteen thousand, two hundred seventy-two".