90380783 has 4 divisors (see below), whose sum is σ = 90418920. Its totient is φ = 90342648.

The previous prime is 90380767. The next prime is 90380803. The reversal of 90380783 is 38708309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90380783 - 2⁴ = 90380767 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 (90380713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15260 + ... + 20337.

It is an arithmetic number, because the mean of its divisors is an integer number (22604730).

Almost surely, 2^90380783 is an apocalyptic number.

90380783 is a deficient number, since it is larger than the sum of its proper divisors (38137).

90380783 is a wasteful number, since it uses less digits than its factorization.

90380783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38136.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 90380783 is about 9506.8808239085. The cubic root of 90380783 is about 448.7716012393.

The spelling of 90380783 in words is "ninety million, three hundred eighty thousand, seven hundred eighty-three".