90239650 has 12 divisors (see below), whose sum is σ = 167845842. Its totient is φ = 36095840.

The previous prime is 90239641. The next prime is 90239657. The reversal of 90239650 is 5693209.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 82682649 + 7557001 = 9093^2 + 2749^2 .

It is not an unprimeable number, because it can be changed into a prime (90239657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 902347 + ... + 902446.

Almost surely, 2^90239650 is an apocalyptic number.

90239650 is a deficient number, since it is larger than the sum of its proper divisors (77606192).

90239650 is a wasteful number, since it uses less digits than its factorization.

90239650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804805 (or 1804800 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 90239650 is about 9499.4552475392. The cubic root of 90239650 is about 448.5378882885.

The spelling of 90239650 in words is "ninety million, two hundred thirty-nine thousand, six hundred fifty".