90444680 has 16 divisors (see below), whose sum is σ = 203500620. Its totient is φ = 36177856.

The previous prime is 90444677. The next prime is 90444689. The reversal of 90444680 is 8644409.

It can be written as a sum of positive squares in 2 ways, for example, as 86750596 + 3694084 = 9314^2 + 1922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90444680.

It is not an unprimeable number, because it can be changed into a prime (90444689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130519 + ... + 1130598.

Almost surely, 2^90444680 is an apocalyptic number.

It is an amenable number.

90444680 is an abundant number, since it is smaller than the sum of its proper divisors (113055940).

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

90444680 is a wasteful number, since it uses less digits than its factorization.

90444680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261128 (or 2261124 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 90444680 is about 9510.2407961103. The cubic root of 90444680 is about 448.8773331702.

The spelling of 90444680 in words is "ninety million, four hundred forty-four thousand, six hundred eighty".