8423953740 has 72 divisors (see below), whose sum is σ = 25567935120. Its totient is φ = 2245044864.

The previous prime is 8423953721. The next prime is 8423953807. The reversal of 8423953740 is 473593248.

8423953740 is a `hidden beast` number, since 8 + 42 + 39 + 537 + 40 = 666.

It is a super-2 number, since 2×8423953740² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308566 + ... + 334754.

It is an arithmetic number, because the mean of its divisors is an integer number (355110210).

Almost surely, 2^8423953740 is an apocalyptic number.

It is an amenable number.

8423953740 is an abundant number, since it is smaller than the sum of its proper divisors (17143981380).

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

8423953740 is a wasteful number, since it uses less digits than its factorization.

8423953740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27991 (or 27986 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 8423953740 is about 91782.0992350905. The cubic root of 8423953740 is about 2034.7231412660.

The spelling of 8423953740 in words is "eight billion, four hundred twenty-three million, nine hundred fifty-three thousand, seven hundred forty".