891947424364 has 48 divisors (see below), whose sum is σ = 1608721785216. Its totient is φ = 432521164800.

The previous prime is 891947424349. The next prime is 891947424383. The reversal of 891947424364 is 463424749198.

It is a super-3 number, since 3×891947424364³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84085149 + ... + 84095755.

It is an arithmetic number, because the mean of its divisors is an integer number (33515037192).

Almost surely, 2^891947424364 is an apocalyptic number.

It is an amenable number.

891947424364 is a deficient number, since it is larger than the sum of its proper divisors (716774360852).

891947424364 is a wasteful number, since it uses less digits than its factorization.

891947424364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15466 (or 15464 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 61.

The spelling of 891947424364 in words is "eight hundred ninety-one billion, nine hundred forty-seven million, four hundred twenty-four thousand, three hundred sixty-four".