90407490 has 64 divisors (see below), whose sum is σ = 222842880. Its totient is φ = 23466240.

The previous prime is 90407483. The next prime is 90407519. The reversal of 90407490 is 9470409.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232216 + ... + 232604.

It is an arithmetic number, because the mean of its divisors is an integer number (3481920).

Almost surely, 2^90407490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90407490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111421440).

90407490 is an abundant number, since it is smaller than the sum of its proper divisors (132435390).

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

90407490 is a wasteful number, since it uses less digits than its factorization.

90407490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 90407490 is about 9508.2853343807. The cubic root of 90407490 is about 448.8158000259.

Adding to 90407490 its reverse (9470409), we get a palindrome (99877899).

The spelling of 90407490 in words is "ninety million, four hundred seven thousand, four hundred ninety".