391488022 has 8 divisors (see below), whose sum is σ = 587493072. Its totient is φ = 195657000.

The previous prime is 391488017. The next prime is 391488029. The reversal of 391488022 is 220884193.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391488029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37729 + ... + 46972.

It is an arithmetic number, because the mean of its divisors is an integer number (73436634).

Almost surely, 2^391488022 is an apocalyptic number.

391488022 is a deficient number, since it is larger than the sum of its proper divisors (196005050).

391488022 is a wasteful number, since it uses less digits than its factorization.

391488022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87014.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 391488022 is about 19786.0562518153. The cubic root of 391488022 is about 731.5423834599.

The spelling of 391488022 in words is "three hundred ninety-one million, four hundred eighty-eight thousand, twenty-two".