90485787 has 16 divisors (see below), whose sum is σ = 140486400. Its totient is φ = 50729952.

The previous prime is 90485743. The next prime is 90485797. The reversal of 90485787 is 78758409.

It is not a de Polignac number, because 90485787 - 2¹⁰ = 90484763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90485797) 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 15 ways as a sum of consecutive naturals, for example, 39537 + ... + 41762.

It is an arithmetic number, because the mean of its divisors is an integer number (8780400).

Almost surely, 2^90485787 is an apocalyptic number.

90485787 is a deficient number, since it is larger than the sum of its proper divisors (50000613).

90485787 is a wasteful number, since it uses less digits than its factorization.

90485787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81362.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 90485787 is about 9512.4017471930. The cubic root of 90485787 is about 448.9453276090.

The spelling of 90485787 in words is "ninety million, four hundred eighty-five thousand, seven hundred eighty-seven".