391369068 has 36 divisors (see below), whose sum is σ = 1041363960. Its totient is φ = 123590016.

The previous prime is 391369063. The next prime is 391369159. The reversal of 391369068 is 860963193.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (391369061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285405 + ... + 286772.

Almost surely, 2^391369068 is an apocalyptic number.

391369068 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

391369068 is an abundant number, since it is smaller than the sum of its proper divisors (649994892).

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

391369068 is a wasteful number, since it uses less digits than its factorization.

391369068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572206 (or 572201 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 391369068 is about 19783.0500176287. The cubic root of 391369068 is about 731.4682826761.

The spelling of 391369068 in words is "three hundred ninety-one million, three hundred sixty-nine thousand, sixty-eight".