398429688 has 64 divisors (see below), whose sum is σ = 1009324800. Its totient is φ = 131056640.

The previous prime is 398429687. The next prime is 398429699. The reversal of 398429688 is 886924893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398429683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109653 + ... + 1110011.

It is an arithmetic number, because the mean of its divisors is an integer number (15770700).

Almost surely, 2^398429688 is an apocalyptic number.

It is an amenable number.

398429688 is an abundant number, since it is smaller than the sum of its proper divisors (610895112).

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

398429688 is a wasteful number, since it uses less digits than its factorization.

398429688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 848 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 57.

The square root of 398429688 is about 19960.7035948135. The cubic root of 398429688 is about 735.8408554380.

The spelling of 398429688 in words is "three hundred ninety-eight million, four hundred twenty-nine thousand, six hundred eighty-eight".