3921699333464 has 32 divisors (see below), whose sum is σ = 8021773612800. Its totient is φ = 1782564853920.

The previous prime is 3921699333451. The next prime is 3921699333467. The reversal of 3921699333464 is 4643339961293.

It is a junction number, because it is equal to n+sod(n) for n = 3921699333397 and 3921699333406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921699333467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6659597 + ... + 7224515.

It is an arithmetic number, because the mean of its divisors is an integer number (250680425400).

Almost surely, 2^{3921699333464} is an apocalyptic number.

It is an amenable number.

3921699333464 is an abundant number, since it is smaller than the sum of its proper divisors (4100074279336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3921699333464 is a wasteful number, since it uses less digits than its factorization.

3921699333464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643823 (or 643819 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 62.

The spelling of 3921699333464 in words is "three trillion, nine hundred twenty-one billion, six hundred ninety-nine million, three hundred thirty-three thousand, four hundred sixty-four".