4644863997 has 8 divisors (see below), whose sum is σ = 6232599456. Its totient is φ = 3076852272.

The previous prime is 4644863957. The next prime is 4644864017. The reversal of 4644863997 is 7993684464.

It is a happy number.

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

It is not a de Polignac number, because 4644863997 - 2¹⁶ = 4644798461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4644863997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4644863917) 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, 4930383 + ... + 4931324.

It is an arithmetic number, because the mean of its divisors is an integer number (779074932).

Almost surely, 2^4644863997 is an apocalyptic number.

It is an amenable number.

4644863997 is a deficient number, since it is larger than the sum of its proper divisors (1587735459).

4644863997 is a wasteful number, since it uses less digits than its factorization.

4644863997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9861867.

The product of its digits is 31352832, while the sum is 60.

The square root of 4644863997 is about 68153.2390792984. The cubic root of 4644863997 is about 1668.4927891863.

The spelling of 4644863997 in words is "four billion, six hundred forty-four million, eight hundred sixty-three thousand, nine hundred ninety-seven".