89811929742 has 16 divisors (see below), whose sum is σ = 180725848320. Its totient is φ = 29753645112.

The previous prime is 89811929731. The next prime is 89811929743. The reversal of 89811929742 is 24792911898.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89811929743) 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, 45915142 + ... + 45917097.

It is an arithmetic number, because the mean of its divisors is an integer number (11295365520).

Almost surely, 2^89811929742 is an apocalyptic number.

89811929742 is an abundant number, since it is smaller than the sum of its proper divisors (90913918578).

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

89811929742 is a wasteful number, since it uses less digits than its factorization.

89811929742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91832407.

The product of its digits is 5225472, while the sum is 60.

The spelling of 89811929742 in words is "eighty-nine billion, eight hundred eleven million, nine hundred twenty-nine thousand, seven hundred forty-two".