90487783 has 4 divisors (see below), whose sum is σ = 90506920. Its totient is φ = 90468648.

The previous prime is 90487763. The next prime is 90487841. The reversal of 90487783 is 38778409.

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 90487783 - 2⁵ = 90487751 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 (90487703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3241 + ... + 13837.

It is an arithmetic number, because the mean of its divisors is an integer number (22626730).

Almost surely, 2^90487783 is an apocalyptic number.

90487783 is a deficient number, since it is larger than the sum of its proper divisors (19137).

90487783 is a wasteful number, since it uses less digits than its factorization.

90487783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19136.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 90487783 is about 9512.5066622841. The cubic root of 90487783 is about 448.9486286367.

The spelling of 90487783 in words is "ninety million, four hundred eighty-seven thousand, seven hundred eighty-three".