90434992 has 40 divisors (see below), whose sum is σ = 184028400. Its totient is φ = 42991872.

The previous prime is 90434987. The next prime is 90434999. The reversal of 90434992 is 29943409.

It is not an unprimeable number, because it can be changed into a prime (90434999) 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, 29634 + ... + 32542.

It is an arithmetic number, because the mean of its divisors is an integer number (4600710).

Almost surely, 2^90434992 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 90434992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92014200).

90434992 is an abundant number, since it is smaller than the sum of its proper divisors (93593408).

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

90434992 is a wasteful number, since it uses less digits than its factorization.

90434992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 90434992 is about 9509.7314367967. The cubic root of 90434992 is about 448.8613054028.

The spelling of 90434992 in words is "ninety million, four hundred thirty-four thousand, nine hundred ninety-two".