90449500 has 48 divisors (see below), whose sum is σ = 207960480. Its totient is φ = 34272000.

The previous prime is 90449483. The next prime is 90449507. The reversal of 90449500 is 594409.

It is a happy number.

It is a super-2 number, since 2×90449500² = 16362224100500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90449507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4740 + ... + 14260.

It is an arithmetic number, because the mean of its divisors is an integer number (4332510).

Almost surely, 2^90449500 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 90449500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103980240).

90449500 is an abundant number, since it is smaller than the sum of its proper divisors (117510980).

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

90449500 is a wasteful number, since it uses less digits than its factorization.

90449500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9559 (or 9547 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90449500 is about 9510.4942037730. The cubic root of 90449500 is about 448.8853069221.

The spelling of 90449500 in words is "ninety million, four hundred forty-nine thousand, five hundred".