391898112 has 176 divisors, whose sum is σ = 1114223040. Its totient is φ = 122257408.

The previous prime is 391898077. The next prime is 391898113. The reversal of 391898112 is 211898193.

It is not an unprimeable number, because it can be changed into a prime (391898113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4721623 + ... + 4721705.

Almost surely, 2^391898112 is an apocalyptic number.

391898112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391898112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557111520).

391898112 is an abundant number, since it is smaller than the sum of its proper divisors (722324928).

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

391898112 is a wasteful number, since it uses less digits than its factorization.

391898112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 170 counting only the distinct ones).

The product of its digits is 31104, while the sum is 42.

The square root of 391898112 is about 19796.4166454437. The cubic root of 391898112 is about 731.7977284591.

The spelling of 391898112 in words is "three hundred ninety-one million, eight hundred ninety-eight thousand, one hundred twelve".