3972335557 has 2 divisors, whose sum is σ = 3972335558. Its totient is φ = 3972335556.

The previous prime is 3972335537. The next prime is 3972335573. The reversal of 3972335557 is 7555332793.

3972335557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3843876001 + 128459556 = 61999^2 + 11334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3972335557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3972335557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3972335537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986167778 + 1986167779.

It is an arithmetic number, because the mean of its divisors is an integer number (1986167779).

Almost surely, 2^3972335557 is an apocalyptic number.

It is an amenable number.

3972335557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972335557 is an equidigital number, since it uses as much as digits as its factorization.

3972335557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2976750, while the sum is 49.

The square root of 3972335557 is about 63026.4671150145. The cubic root of 3972335557 is about 1583.7330356309.

The spelling of 3972335557 in words is "three billion, nine hundred seventy-two million, three hundred thirty-five thousand, five hundred fifty-seven".