90399150 has 144 divisors (see below), whose sum is σ = 260660400. Its totient is φ = 22394880.

The previous prime is 90399139. The next prime is 90399157. The reversal of 90399150 is 5199309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90399157) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 829296 + ... + 829404.

Almost surely, 2^90399150 is an apocalyptic number.

90399150 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90399150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130330200).

90399150 is an abundant number, since it is smaller than the sum of its proper divisors (170261250).

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

90399150 is a wasteful number, since it uses less digits than its factorization.

90399150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 90399150 is about 9507.8467593877. The cubic root of 90399150 is about 448.8019986661.

The spelling of 90399150 in words is "ninety million, three hundred ninety-nine thousand, one hundred fifty".