3956091557 has 8 divisors (see below), whose sum is σ = 4341580992. Its totient is φ = 3574909600.

The previous prime is 3956091533. The next prime is 3956091569. The reversal of 3956091557 is 7551906593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3956091557 - 2⁶ = 3956091493 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 (3956091457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074944 + ... + 1078617.

It is an arithmetic number, because the mean of its divisors is an integer number (542697624).

Almost surely, 2^3956091557 is an apocalyptic number.

It is an amenable number.

3956091557 is a deficient number, since it is larger than the sum of its proper divisors (385489435).

3956091557 is a wasteful number, since it uses less digits than its factorization.

3956091557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153739.

The product of its (nonzero) digits is 1275750, while the sum is 50.

The square root of 3956091557 is about 62897.4686056601. The cubic root of 3956091557 is about 1581.5713093519.

The spelling of 3956091557 in words is "three billion, nine hundred fifty-six million, ninety-one thousand, five hundred fifty-seven".