398343774 has 8 divisors (see below), whose sum is σ = 796687560. Its totient is φ = 132781256.

The previous prime is 398343767. The next prime is 398343791. The reversal of 398343774 is 477343893.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

398343774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33195309 + ... + 33195320.

It is an arithmetic number, because the mean of its divisors is an integer number (99585945).

Almost surely, 2^398343774 is an apocalyptic number.

398343774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398343774 is a wasteful number, since it uses less digits than its factorization.

398343774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66390634.

The product of its digits is 1524096, while the sum is 48.

The square root of 398343774 is about 19958.5514003397. The cubic root of 398343774 is about 735.7879614748.

The spelling of 398343774 in words is "three hundred ninety-eight million, three hundred forty-three thousand, seven hundred seventy-four".