90394660 has 12 divisors (see below), whose sum is σ = 189828828. Its totient is φ = 36157856.

The previous prime is 90394657. The next prime is 90394673. The reversal of 90394660 is 6649309.

It can be written as a sum of positive squares in 2 ways, for example, as 34951744 + 55442916 = 5912^2 + 7446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259847 + ... + 2259886.

It is an arithmetic number, because the mean of its divisors is an integer number (15819069).

Almost surely, 2^90394660 is an apocalyptic number.

It is an amenable number.

90394660 is an abundant number, since it is smaller than the sum of its proper divisors (99434168).

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

90394660 is a wasteful number, since it uses less digits than its factorization.

90394660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519742 (or 4519740 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 90394660 is about 9507.6106356960. The cubic root of 90394660 is about 448.7945680862.

The spelling of 90394660 in words is "ninety million, three hundred ninety-four thousand, six hundred sixty".