921084404199 has 8 divisors (see below), whose sum is σ = 1233251086080. Its totient is φ = 611486995896.

The previous prime is 921084404173. The next prime is 921084404213. The reversal of 921084404199 is 991404480129.

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

It is not a de Polignac number, because 921084404199 - 2²⁰ = 921083355623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921084404599) 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, 642317557 + ... + 642318990.

It is an arithmetic number, because the mean of its divisors is an integer number (154156385760).

Almost surely, 2^921084404199 is an apocalyptic number.

921084404199 is a deficient number, since it is larger than the sum of its proper divisors (312166681881).

921084404199 is a wasteful number, since it uses less digits than its factorization.

921084404199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284636789.

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 921084404199 in words is "nine hundred twenty-one billion, eighty-four million, four hundred four thousand, one hundred ninety-nine".