3979654957 has 4 divisors (see below), whose sum is σ = 3985844800. Its totient is φ = 3973465116.

The previous prime is 3979654927. The next prime is 3979654963. The reversal of 3979654957 is 7594569793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7594569793 = 29 ⋅261881717.

It is a cyclic number.

It is not a de Polignac number, because 3979654957 - 2¹⁵ = 3979622189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979654907) 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 3 ways as a sum of consecutive naturals, for example, 3093957 + ... + 3095242.

It is an arithmetic number, because the mean of its divisors is an integer number (996461200).

Almost surely, 2^3979654957 is an apocalyptic number.

It is an amenable number.

3979654957 is a deficient number, since it is larger than the sum of its proper divisors (6189843).

3979654957 is an equidigital number, since it uses as much as digits as its factorization.

3979654957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189842.

The product of its digits is 64297800, while the sum is 64.

The square root of 3979654957 is about 63084.5064734599. The cubic root of 3979654957 is about 1584.7051642379.

The spelling of 3979654957 in words is "three billion, nine hundred seventy-nine million, six hundred fifty-four thousand, nine hundred fifty-seven".