90990736 has 10 divisors (see below), whose sum is σ = 176294582. Its totient is φ = 45495360.

The previous prime is 90990727. The next prime is 90990743. The reversal of 90990736 is 63709909.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 42771600 = 6944^2 + 6540^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90990692 and 90990701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2843445 + ... + 2843476.

Almost surely, 2^90990736 is an apocalyptic number.

It is an amenable number.

90990736 is a deficient number, since it is larger than the sum of its proper divisors (85303846).

90990736 is a wasteful number, since it uses less digits than its factorization.

90990736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686929 (or 5686923 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 90990736 is about 9538.9064362745. The cubic root of 90990736 is about 449.7788806654.

The spelling of 90990736 in words is "ninety million, nine hundred ninety thousand, seven hundred thirty-six".