3959957401 has 2 divisors, whose sum is σ = 3959957402. Its totient is φ = 3959957400.

The previous prime is 3959957389. The next prime is 3959957431. The reversal of 3959957401 is 1047599593.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3906375001 + 53582400 = 62501^2 + 7320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3959957401 - 2⁵ = 3959957369 is a prime.

It is not a weakly prime, because it can be changed into another prime (3959957431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979978700 + 1979978701.

It is an arithmetic number, because the mean of its divisors is an integer number (1979978701).

Almost surely, 2^3959957401 is an apocalyptic number.

It is an amenable number.

3959957401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959957401 is an equidigital number, since it uses as much as digits as its factorization.

3959957401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The square root of 3959957401 is about 62928.1924180252. The cubic root of 3959957401 is about 1582.0863056478.

The spelling of 3959957401 in words is "three billion, nine hundred fifty-nine million, nine hundred fifty-seven thousand, four hundred one".