3957687473 has 2 divisors, whose sum is σ = 3957687474. Its totient is φ = 3957687472.

The previous prime is 3957687469. The next prime is 3957687493. The reversal of 3957687473 is 3747867593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3778315024 + 179372449 = 61468^2 + 13393^2 .

It is a cyclic number.

It is not a de Polignac number, because 3957687473 - 2² = 3957687469 is a prime.

It is a super-2 number, since 2×3957687473² = 31326580267882251458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3957687463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978843736 + 1978843737.

It is an arithmetic number, because the mean of its divisors is an integer number (1978843737).

Almost surely, 2^3957687473 is an apocalyptic number.

It is an amenable number.

3957687473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3957687473 is an equidigital number, since it uses as much as digits as its factorization.

3957687473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 59.

The square root of 3957687473 is about 62910.1539737426. The cubic root of 3957687473 is about 1581.7839532026.

The spelling of 3957687473 in words is "three billion, nine hundred fifty-seven million, six hundred eighty-seven thousand, four hundred seventy-three".