89429640 has 32 divisors (see below), whose sum is σ = 268289280. Its totient is φ = 23847872.

The previous prime is 89429633. The next prime is 89429671. The reversal of 89429640 is 4692498.

It is a junction number, because it is equal to n+sod(n) for n = 89429592 and 89429601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372504 + ... + 372743.

It is an arithmetic number, because the mean of its divisors is an integer number (8384040).

Almost surely, 2^89429640 is an apocalyptic number.

It is an amenable number.

89429640 is an abundant number, since it is smaller than the sum of its proper divisors (178859640).

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

89429640 is a wasteful number, since it uses less digits than its factorization.

89429640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745261 (or 745257 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 89429640 is about 9456.7245915274. The cubic root of 89429640 is about 447.1917959374.

The spelling of 89429640 in words is "eighty-nine million, four hundred twenty-nine thousand, six hundred forty".