90783903 has 32 divisors (see below), whose sum is σ = 146698240. Its totient is φ = 48833280.

The previous prime is 90783887. The next prime is 90783907. The reversal of 90783903 is 30938709.

It is a happy number.

It is not a de Polignac number, because 90783903 - 2⁴ = 90783887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90783907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22203 + ... + 25971.

It is an arithmetic number, because the mean of its divisors is an integer number (4584320).

Almost surely, 2^90783903 is an apocalyptic number.

90783903 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

90783903 is a deficient number, since it is larger than the sum of its proper divisors (55914337).

90783903 is a wasteful number, since it uses less digits than its factorization.

90783903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 90783903 is about 9528.0587214815. The cubic root of 90783903 is about 449.4378214276.

The spelling of 90783903 in words is "ninety million, seven hundred eighty-three thousand, nine hundred three".