398433402 has 12 divisors (see below), whose sum is σ = 863272410. Its totient is φ = 132811128.

The previous prime is 398433391. The next prime is 398433433. The reversal of 398433402 is 204334893.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 284563161 + 113870241 = 16869^2 + 10671^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11067577 + ... + 11067612.

Almost surely, 2^398433402 is an apocalyptic number.

398433402 is an abundant number, since it is smaller than the sum of its proper divisors (464839008).

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

398433402 is a wasteful number, since it uses less digits than its factorization.

398433402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22135197 (or 22135194 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 398433402 is about 19960.7966273894. The cubic root of 398433402 is about 735.8431418343.

The spelling of 398433402 in words is "three hundred ninety-eight million, four hundred thirty-three thousand, four hundred two".