90789744 has 40 divisors (see below), whose sum is σ = 240265872. Its totient is φ = 29524480.

The previous prime is 90789739. The next prime is 90789773. The reversal of 90789744 is 44798709.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 90789693 and 90789702.

It is a congruent number.

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, 21099 + ... + 25034.

Almost surely, 2^90789744 is an apocalyptic number.

It is an amenable number.

90789744 is an abundant number, since it is smaller than the sum of its proper divisors (149476128).

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

90789744 is a wasteful number, since it uses less digits than its factorization.

90789744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46185 (or 46179 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 90789744 is about 9528.3652322946. The cubic root of 90789744 is about 449.4474601041.

The spelling of 90789744 in words is "ninety million, seven hundred eighty-nine thousand, seven hundred forty-four".