398694472 has 64 divisors (see below), whose sum is σ = 891440640. Its totient is φ = 165043200.

The previous prime is 398694463. The next prime is 398694493. The reversal of 398694472 is 274496893.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42078 + ... + 50674.

It is an arithmetic number, because the mean of its divisors is an integer number (13928760).

Almost surely, 2^398694472 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 398694472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445720320).

398694472 is an abundant number, since it is smaller than the sum of its proper divisors (492746168).

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

398694472 is a wasteful number, since it uses less digits than its factorization.

398694472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8662 (or 8658 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 398694472 is about 19967.3351251488. The cubic root of 398694472 is about 736.0038250038.

The spelling of 398694472 in words is "three hundred ninety-eight million, six hundred ninety-four thousand, four hundred seventy-two".