8404997868 has 36 divisors (see below), whose sum is σ = 21764164968. Its totient is φ = 2733332160.

The previous prime is 8404997857. The next prime is 8404997873. The reversal of 8404997868 is 8687994048.

8404997868 is a `hidden beast` number, since 84 + 0 + 499 + 7 + 8 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×8404997868² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2845746 + ... + 2848697.

It is an arithmetic number, because the mean of its divisors is an integer number (604560138).

Almost surely, 2^8404997868 is an apocalyptic number.

It is an amenable number.

8404997868 is an abundant number, since it is smaller than the sum of its proper divisors (13359167100).

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

8404997868 is a wasteful number, since it uses less digits than its factorization.

8404997868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694494 (or 5694489 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The square root of 8404997868 is about 91678.7754499372. The cubic root of 8404997868 is about 2033.1957936051.

The spelling of 8404997868 in words is "eight billion, four hundred four million, nine hundred ninety-seven thousand, eight hundred sixty-eight".