398467664 has 40 divisors (see below), whose sum is σ = 883782720. Its totient is φ = 170489088.

The previous prime is 398467661. The next prime is 398467669. The reversal of 398467664 is 466764893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398467661) 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, 73892 + ... + 79100.

It is an arithmetic number, because the mean of its divisors is an integer number (22094568).

Almost surely, 2^398467664 is an apocalyptic number.

It is an amenable number.

398467664 is an abundant number, since it is smaller than the sum of its proper divisors (485315056).

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

398467664 is a wasteful number, since it uses less digits than its factorization.

398467664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907 (or 5901 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 53.

The square root of 398467664 is about 19961.6548412200. The cubic root of 398467664 is about 735.8642333851.

The spelling of 398467664 in words is "three hundred ninety-eight million, four hundred sixty-seven thousand, six hundred sixty-four".