398938926 has 8 divisors (see below), whose sum is σ = 797877864. Its totient is φ = 132979640.

The previous prime is 398938901. The next prime is 398938927. The reversal of 398938926 is 629839893.

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

398938926 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398938927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33244905 + ... + 33244916.

It is an arithmetic number, because the mean of its divisors is an integer number (99734733).

Almost surely, 2^398938926 is an apocalyptic number.

398938926 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.

398938926 is a wasteful number, since it uses less digits than its factorization.

398938926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66489826.

The product of its digits is 5038848, while the sum is 57.

The square root of 398938926 is about 19973.4555347842. The cubic root of 398938926 is about 736.1542177920.

The spelling of 398938926 in words is "three hundred ninety-eight million, nine hundred thirty-eight thousand, nine hundred twenty-six".