4989957684 has 12 divisors (see below), whose sum is σ = 11643234624. Its totient is φ = 1663319224.

The previous prime is 4989957653. The next prime is 4989957689. The reversal of 4989957684 is 4867599894.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4989957684² = 49799355376221287712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989957689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207914892 + ... + 207914915.

It is an arithmetic number, because the mean of its divisors is an integer number (970269552).

Almost surely, 2^4989957684 is an apocalyptic number.

It is an amenable number.

4989957684 is an abundant number, since it is smaller than the sum of its proper divisors (6653276940).

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

4989957684 is a wasteful number, since it uses less digits than its factorization.

4989957684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415829814 (or 415829812 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 69.

The square root of 4989957684 is about 70639.6325301880. The cubic root of 4989957684 is about 1708.8303714649.

The spelling of 4989957684 in words is "four billion, nine hundred eighty-nine million, nine hundred fifty-seven thousand, six hundred eighty-four".