3956407965 has 48 divisors (see below), whose sum is σ = 7063804800. Its totient is φ = 2047026816.

The previous prime is 3956407963. The next prime is 3956407979. The reversal of 3956407965 is 5697046593.

3956407965 is a `hidden beast` number, since 3 + 9 + 564 + 0 + 79 + 6 + 5 = 666.

It is not a de Polignac number, because 3956407965 - 2¹ = 3956407963 is a prime.

It is a super-3 number, since 3×3956407965³ (a number of 30 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956407963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 594426 + ... + 601044.

It is an arithmetic number, because the mean of its divisors is an integer number (147162600).

Almost surely, 2^3956407965 is an apocalyptic number.

It is an amenable number.

3956407965 is a deficient number, since it is larger than the sum of its proper divisors (3107396835).

3956407965 is a wasteful number, since it uses less digits than its factorization.

3956407965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026 (or 7023 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The square root of 3956407965 is about 62899.9838235273. The cubic root of 3956407965 is about 1581.6134728920.

The spelling of 3956407965 in words is "three billion, nine hundred fifty-six million, four hundred seven thousand, nine hundred sixty-five".