398899700 has 36 divisors (see below), whose sum is σ = 866697132. Its totient is φ = 159360000.

The previous prime is 398899681. The next prime is 398899703. The reversal of 398899700 is 7998893.

It can be written as a sum of positive squares in 6 ways, for example, as 21141604 + 377758096 = 4598^2 + 19436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398899703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97700 + ... + 101700.

Almost surely, 2^398899700 is an apocalyptic number.

It is an amenable number.

398899700 is an abundant number, since it is smaller than the sum of its proper divisors (467797432).

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

398899700 is a wasteful number, since it uses less digits than its factorization.

398899700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012 (or 5005 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 398899700 is about 19972.4735573739. The cubic root of 398899700 is about 736.1300893436.

It can be divided in two parts, 3988 and 99700, that multiplied together give a square (397603600 = 19940²).

The spelling of 398899700 in words is "three hundred ninety-eight million, eight hundred ninety-nine thousand, seven hundred".