89742943917 has 96 divisors (see below), whose sum is σ = 155124927360. Its totient is φ = 49351680000.

The previous prime is 89742943909. The next prime is 89742943937. The reversal of 89742943917 is 71934924798.

89742943917 is a `hidden beast` number, since 89 + 7 + 429 + 43 + 91 + 7 = 666.

It is not a de Polignac number, because 89742943917 - 2³ = 89742943909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89742943907) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58616442 + ... + 58617972.

It is an arithmetic number, because the mean of its divisors is an integer number (1615884660).

Almost surely, 2^89742943917 is an apocalyptic number.

89742943917 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

89742943917 is a deficient number, since it is larger than the sum of its proper divisors (65381983443).

89742943917 is a wasteful number, since it uses less digits than its factorization.

89742943917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795 (or 2792 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 89742943917 in words is "eighty-nine billion, seven hundred forty-two million, nine hundred forty-three thousand, nine hundred seventeen".