6244697921 has 8 divisors (see below), whose sum is σ = 7785597504. Its totient is φ = 4865998320.

The previous prime is 6244697887. The next prime is 6244697929. The reversal of 6244697921 is 1297964426.

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 6244697921 - 2⁶ = 6244697857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6244697921.

It is not an unprimeable number, because it can be changed into a prime (6244697929) 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, 40549910 + ... + 40550063.

It is an arithmetic number, because the mean of its divisors is an integer number (973199688).

Almost surely, 2^6244697921 is an apocalyptic number.

It is an amenable number.

6244697921 is a deficient number, since it is larger than the sum of its proper divisors (1540899583).

6244697921 is a wasteful number, since it uses less digits than its factorization.

6244697921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81099991.

The product of its digits is 1306368, while the sum is 50.

The square root of 6244697921 is about 79023.4010973965. The cubic root of 6244697921 is about 1841.4947212629.

The spelling of 6244697921 in words is "six billion, two hundred forty-four million, six hundred ninety-seven thousand, nine hundred twenty-one".