90009744 has 40 divisors (see below), whose sum is σ = 253665312. Its totient is φ = 27275520.

The previous prime is 90009739. The next prime is 90009757. The reversal of 90009744 is 44790009.

It is a super-4 number, since 4×90009744⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84709 + ... + 85764.

Almost surely, 2^90009744 is an apocalyptic number.

It is an amenable number.

90009744 is an abundant number, since it is smaller than the sum of its proper divisors (163655568).

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

90009744 is a wasteful number, since it uses less digits than its factorization.

90009744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170495 (or 170489 counting only the distinct ones).

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

The square root of 90009744 is about 9487.3465204977. The cubic root of 90009744 is about 448.1566469639.

The spelling of 90009744 in words is "ninety million, nine thousand, seven hundred forty-four".