89429172 has 96 divisors (see below), whose sum is σ = 250650624. Its totient is φ = 24278400.

The previous prime is 89429149. The next prime is 89429183. The reversal of 89429172 is 27192498.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158563 + ... + 159125.

It is an arithmetic number, because the mean of its divisors is an integer number (2610944).

Almost surely, 2^89429172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89429172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125325312).

89429172 is an abundant number, since it is smaller than the sum of its proper divisors (161221452).

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

89429172 is a wasteful number, since it uses less digits than its factorization.

89429172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 667 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 89429172 is about 9456.6998471983. The cubic root of 89429172 is about 447.1910158600.

The spelling of 89429172 in words is "eighty-nine million, four hundred twenty-nine thousand, one hundred seventy-two".