4256399164 has 24 divisors (see below), whose sum is σ = 7575186528. Its totient is φ = 2092231680.

The previous prime is 4256399143. The next prime is 4256399167. The reversal of 4256399164 is 4619936524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256399167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79024 + ... + 121480.

It is an arithmetic number, because the mean of its divisors is an integer number (315632772).

Almost surely, 2^4256399164 is an apocalyptic number.

It is an amenable number.

4256399164 is a deficient number, since it is larger than the sum of its proper divisors (3318787364).

4256399164 is a wasteful number, since it uses less digits than its factorization.

4256399164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42885 (or 42883 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

The square root of 4256399164 is about 65241.0849388635. The cubic root of 4256399164 is about 1620.6184657844.

The spelling of 4256399164 in words is "four billion, two hundred fifty-six million, three hundred ninety-nine thousand, one hundred sixty-four".