90783790 has 32 divisors (see below), whose sum is σ = 167806080. Its totient is φ = 35345664.

The previous prime is 90783787. The next prime is 90783809. The reversal of 90783790 is 9738709.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 109096 + ... + 109924.

It is an arithmetic number, because the mean of its divisors is an integer number (5243940).

Almost surely, 2^90783790 is an apocalyptic number.

90783790 is a deficient number, since it is larger than the sum of its proper divisors (77022290).

90783790 is a wasteful number, since it uses less digits than its factorization.

90783790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 90783790 is about 9528.0527916254. The cubic root of 90783790 is about 449.4376349537.

The spelling of 90783790 in words is "ninety million, seven hundred eighty-three thousand, seven hundred ninety".