4985399664 has 480 divisors, whose sum is σ = 18025512960. Its totient is φ = 1301702400.

The previous prime is 4985399663. The next prime is 4985399669. The reversal of 4985399664 is 4669935894.

4985399664 is a `hidden beast` number, since 4 + 9 + 8 + 539 + 96 + 6 + 4 = 666.

It is a super-2 number, since 2×4985399664² = 49708419619622625792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4985399663) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16030069 + ... + 16030379.

It is an arithmetic number, because the mean of its divisors is an integer number (37553152).

Almost surely, 2^4985399664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4985399664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9012756480).

4985399664 is an abundant number, since it is smaller than the sum of its proper divisors (13040113296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4985399664 is a wasteful number, since it uses less digits than its factorization.

4985399664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 373 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The square root of 4985399664 is about 70607.3626755737. The cubic root of 4985399664 is about 1708.3099090841.

The spelling of 4985399664 in words is "four billion, nine hundred eighty-five million, three hundred ninety-nine thousand, six hundred sixty-four".