398941022 has 4 divisors (see below), whose sum is σ = 598411536. Its totient is φ = 199470510.

The previous prime is 398941009. The next prime is 398941027. The reversal of 398941022 is 220149893.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398941027) by changing a digit.

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 as a sum of consecutive naturals, namely, 99735254 + ... + 99735257.

It is an arithmetic number, because the mean of its divisors is an integer number (149602884).

Almost surely, 2^398941022 is an apocalyptic number.

398941022 is a deficient number, since it is larger than the sum of its proper divisors (199470514).

398941022 is a wasteful number, since it uses less digits than its factorization.

398941022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199470513.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 398941022 is about 19973.5080043542. The cubic root of 398941022 is about 736.1555070257.

The spelling of 398941022 in words is "three hundred ninety-eight million, nine hundred forty-one thousand, twenty-two".