90384771 has 8 divisors (see below), whose sum is σ = 120683520. Its totient is φ = 60171272.

The previous prime is 90384761. The next prime is 90384773. The reversal of 90384771 is 17748309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90384771 - 2¹⁷ = 90253699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90384773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18795 + ... + 23108.

It is an arithmetic number, because the mean of its divisors is an integer number (15085440).

Almost surely, 2^90384771 is an apocalyptic number.

90384771 is a deficient number, since it is larger than the sum of its proper divisors (30298749).

90384771 is a wasteful number, since it uses less digits than its factorization.

90384771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42625.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 90384771 is about 9507.0905644156. The cubic root of 90384771 is about 448.7782017384.

The spelling of 90384771 in words is "ninety million, three hundred eighty-four thousand, seven hundred seventy-one".