4001663479 has 40 divisors (see below), whose sum is σ = 4626644400. Its totient is φ = 3457618560.

The previous prime is 4001663453. The next prime is 4001663483. The reversal of 4001663479 is 9743661004.

It is not a de Polignac number, because 4001663479 - 2¹¹ = 4001661431 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001663429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44962467 + ... + 44962555.

It is an arithmetic number, because the mean of its divisors is an integer number (115666110).

Almost surely, 2^4001663479 is an apocalyptic number.

4001663479 is a deficient number, since it is larger than the sum of its proper divisors (624980921).

4001663479 is an frugal number, since it uses more digits than its factorization.

4001663479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 4001663479 is about 63258.7027925802. The cubic root of 4001663479 is about 1587.6210721640.

The spelling of 4001663479 in words is "four billion, one million, six hundred sixty-three thousand, four hundred seventy-nine".