391298087167 has 8 divisors (see below), whose sum is σ = 421785625856. Its totient is φ = 360865932192.

The previous prime is 391298087161. The next prime is 391298087261. The reversal of 391298087167 is 761780892193.

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

It is a cyclic number.

It is not a de Polignac number, because 391298087167 - 2¹¹ = 391298085119 is a prime.

It is a super-2 number, since 2×391298087167² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391298087161) 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, 13831248 + ... + 13859509.

It is an arithmetic number, because the mean of its divisors is an integer number (52723203232).

Almost surely, 2^391298087167 is an apocalyptic number.

391298087167 is a deficient number, since it is larger than the sum of its proper divisors (30487538689).

391298087167 is a wasteful number, since it uses less digits than its factorization.

391298087167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27691857.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 391298087167 in words is "three hundred ninety-one billion, two hundred ninety-eight million, eighty-seven thousand, one hundred sixty-seven".