90216942 has 16 divisors (see below), whose sum is σ = 180537552. Its totient is φ = 30055040.

The previous prime is 90216911. The next prime is 90216947. The reversal of 90216942 is 24961209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90216947) 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, 11392 + ... + 17612.

It is an arithmetic number, because the mean of its divisors is an integer number (11283597).

Almost surely, 2^90216942 is an apocalyptic number.

90216942 is an abundant number, since it is smaller than the sum of its proper divisors (90320610).

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

90216942 is a wasteful number, since it uses less digits than its factorization.

90216942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90216942 is about 9498.2599459059. The cubic root of 90216942 is about 448.5002616176.

The spelling of 90216942 in words is "ninety million, two hundred sixteen thousand, nine hundred forty-two".