3946973757 has 4 divisors (see below), whose sum is σ = 5262631680. Its totient is φ = 2631315836.

The previous prime is 3946973753. The next prime is 3946973777. The reversal of 3946973757 is 7573796493.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 3946973757 - 2² = 3946973753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3946973757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946973753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657828957 + ... + 657828962.

It is an arithmetic number, because the mean of its divisors is an integer number (1315657920).

Almost surely, 2^3946973757 is an apocalyptic number.

It is an amenable number.

3946973757 is a deficient number, since it is larger than the sum of its proper divisors (1315657923).

3946973757 is a wasteful number, since it uses less digits than its factorization.

3946973757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315657922.

The product of its digits is 30005640, while the sum is 60.

The square root of 3946973757 is about 62824.9453402070. The cubic root of 3946973757 is about 1580.3553328094.

The spelling of 3946973757 in words is "three billion, nine hundred forty-six million, nine hundred seventy-three thousand, seven hundred fifty-seven".