391990460453 has 16 divisors (see below), whose sum is σ = 415813310976. Its totient is φ = 368878173120.

The previous prime is 391990460387. The next prime is 391990460483. The reversal of 391990460453 is 354064099193.

It is a cyclic number.

It is not a de Polignac number, because 391990460453 - 2¹² = 391990456357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 391990460395 and 391990460404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391990460483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889150 + ... + 2086352.

It is an arithmetic number, because the mean of its divisors is an integer number (25988331936).

Almost surely, 2^391990460453 is an apocalyptic number.

It is an amenable number.

391990460453 is a deficient number, since it is larger than the sum of its proper divisors (23822850523).

391990460453 is a wasteful number, since it uses less digits than its factorization.

391990460453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199004.

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 391990460453 in words is "three hundred ninety-one billion, nine hundred ninety million, four hundred sixty thousand, four hundred fifty-three".