89724667994 has 16 divisors (see below), whose sum is σ = 145131346248. Its totient is φ = 41356671552.

The previous prime is 89724667979. The next prime is 89724667997. The reversal of 89724667994 is 49976642798.

It can be written as a sum of positive squares in 4 ways, for example, as 87210949225 + 2513718769 = 295315^2 + 50137^2 .

It is not an unprimeable number, because it can be changed into a prime (89724667997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2259677 + ... + 2299040.

Almost surely, 2^89724667994 is an apocalyptic number.

89724667994 is a deficient number, since it is larger than the sum of its proper divisors (55406678254).

89724667994 is a wasteful number, since it uses less digits than its factorization.

89724667994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559489.

The product of its digits is 329204736, while the sum is 71.

The spelling of 89724667994 in words is "eighty-nine billion, seven hundred twenty-four million, six hundred sixty-seven thousand, nine hundred ninety-four".