398040692 has 24 divisors (see below), whose sum is σ = 803132736. Its totient is φ = 169077888.

The previous prime is 398040673. The next prime is 398040743. The reversal of 398040692 is 296040893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59738 + ... + 66065.

It is an arithmetic number, because the mean of its divisors is an integer number (33463864).

Almost surely, 2^398040692 is an apocalyptic number.

It is an amenable number.

398040692 is an abundant number, since it is smaller than the sum of its proper divisors (405092044).

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

398040692 is a wasteful number, since it uses less digits than its factorization.

398040692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125927 (or 125925 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 398040692 is about 19950.9571700207. The cubic root of 398040692 is about 735.6013047197.

The spelling of 398040692 in words is "three hundred ninety-eight million, forty thousand, six hundred ninety-two".