391849920001 has 8 divisors (see below), whose sum is σ = 399252608064. Its totient is φ = 384447576240.

The previous prime is 391849919983. The next prime is 391849920067. The reversal of 391849920001 is 100029948193.

It is a happy number.

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 391849920001 - 2⁷ = 391849919873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (391849920601) 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, 4339846 + ... + 4429216.

It is an arithmetic number, because the mean of its divisors is an integer number (49906576008).

Almost surely, 2^391849920001 is an apocalyptic number.

It is an amenable number.

391849920001 is a deficient number, since it is larger than the sum of its proper divisors (7402688063).

391849920001 is an equidigital number, since it uses as much as digits as its factorization.

391849920001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172151.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 391849920001 in words is "three hundred ninety-one billion, eight hundred forty-nine million, nine hundred twenty thousand, one".