4921979731 has 16 divisors (see below), whose sum is σ = 5221117440. Its totient is φ = 4632292000.

The previous prime is 4921979719. The next prime is 4921979743. The reversal of 4921979731 is 1379791294.

It is an interprime number because it is at equal distance from previous prime (4921979719) and next prime (4921979743).

It is a cyclic number.

It is not a de Polignac number, because 4921979731 - 2²¹ = 4919882579 is a prime.

It is a super-2 number, since 2×4921979731² = 48451768944749664722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4921974731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334920 + ... + 349306.

It is an arithmetic number, because the mean of its divisors is an integer number (326319840).

Almost surely, 2^4921979731 is an apocalyptic number.

4921979731 is a deficient number, since it is larger than the sum of its proper divisors (299137709).

4921979731 is a wasteful number, since it uses less digits than its factorization.

4921979731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714.

The product of its digits is 857304, while the sum is 52.

The square root of 4921979731 is about 70156.8224123641. The cubic root of 4921979731 is about 1701.0350940773.

The spelling of 4921979731 in words is "four billion, nine hundred twenty-one million, nine hundred seventy-nine thousand, seven hundred thirty-one".