392121198 has 48 divisors (see below), whose sum is σ = 987442560. Its totient is φ = 110133648.

The previous prime is 392121131. The next prime is 392121203. The reversal of 392121198 is 891121293.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18940 + ... + 33807.

It is an arithmetic number, because the mean of its divisors is an integer number (20571720).

Almost surely, 2^392121198 is an apocalyptic number.

392121198 is an abundant number, since it is smaller than the sum of its proper divisors (595321362).

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

392121198 is a wasteful number, since it uses less digits than its factorization.

392121198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52821 (or 52818 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 392121198 is about 19802.0503483856. The cubic root of 392121198 is about 731.9365594934.

The spelling of 392121198 in words is "three hundred ninety-two million, one hundred twenty-one thousand, one hundred ninety-eight".