8923967640 has 160 divisors (see below), whose sum is σ = 34279454880. Its totient is φ = 2039758848.

The previous prime is 8923967629. The next prime is 8923967659. The reversal of 8923967640 is 467693298.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 174057 + ... + 219416.

It is an arithmetic number, because the mean of its divisors is an integer number (214246593).

Almost surely, 2^8923967640 is an apocalyptic number.

It is an amenable number.

8923967640 is an abundant number, since it is smaller than the sum of its proper divisors (25355487240).

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

8923967640 is a wasteful number, since it uses less digits than its factorization.

8923967640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393503 (or 393490 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 8923967640 is about 94466.7541519237. The cubic root of 8923967640 is about 2074.2097064951.

The spelling of 8923967640 in words is "eight billion, nine hundred twenty-three million, nine hundred sixty-seven thousand, six hundred forty".