442188974 has 16 divisors (see below), whose sum is σ = 672189840. Its totient is φ = 218133120.

The previous prime is 442188941. The next prime is 442188979. The reversal of 442188974 is 479881244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442188979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168182 + ... + 170790.

It is an arithmetic number, because the mean of its divisors is an integer number (42011865).

Almost surely, 2^442188974 is an apocalyptic number.

442188974 is a deficient number, since it is larger than the sum of its proper divisors (230000866).

442188974 is a wasteful number, since it uses less digits than its factorization.

442188974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715.

The product of its digits is 516096, while the sum is 47.

The square root of 442188974 is about 21028.2898496288. The cubic root of 442188974 is about 761.8497038720.

The spelling of 442188974 in words is "four hundred forty-two million, one hundred eighty-eight thousand, nine hundred seventy-four".