391941102 has 24 divisors (see below), whose sum is σ = 911863656. Its totient is φ = 111983088.

The previous prime is 391941083. The next prime is 391941113. The reversal of 391941102 is 201149193.

It is a self number, because there is not a number n which added to its sum of digits gives 391941102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 666273 + ... + 666860.

It is an arithmetic number, because the mean of its divisors is an integer number (37994319).

Almost surely, 2^391941102 is an apocalyptic number.

391941102 is an abundant number, since it is smaller than the sum of its proper divisors (519922554).

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

391941102 is a wasteful number, since it uses less digits than its factorization.

391941102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333152 (or 1333145 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 391941102 is about 19797.5024182345. The cubic root of 391941102 is about 731.8244861232.

The spelling of 391941102 in words is "three hundred ninety-one million, nine hundred forty-one thousand, one hundred two".