90990342 has 24 divisors (see below), whose sum is σ = 203945040. Its totient is φ = 29284080.

The previous prime is 90990311. The next prime is 90990343. The reversal of 90990342 is 24309909.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90990297 and 90990306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90990343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86634 + ... + 87677.

It is an arithmetic number, because the mean of its divisors is an integer number (8497710).

Almost surely, 2^90990342 is an apocalyptic number.

90990342 is an abundant number, since it is smaller than the sum of its proper divisors (112954698).

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

90990342 is a wasteful number, since it uses less digits than its factorization.

90990342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174348 (or 174345 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 90990342 is about 9538.8857839897. The cubic root of 90990342 is about 449.7782314670.

The spelling of 90990342 in words is "ninety million, nine hundred ninety thousand, three hundred forty-two".