90859471 has 4 divisors (see below), whose sum is σ = 90910512. Its totient is φ = 90808432.

The previous prime is 90859459. The next prime is 90859487. The reversal of 90859471 is 17495809.

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 90859471 - 2¹³ = 90851279 is a prime.

It is a super-3 number, since 3×90859471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90856471) 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, 22750 + ... + 26443.

It is an arithmetic number, because the mean of its divisors is an integer number (22727628).

Almost surely, 2^90859471 is an apocalyptic number.

90859471 is a deficient number, since it is larger than the sum of its proper divisors (51041).

90859471 is a wasteful number, since it uses less digits than its factorization.

90859471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51040.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 90859471 is about 9532.0234473065. The cubic root of 90859471 is about 449.5624899975.

The spelling of 90859471 in words is "ninety million, eight hundred fifty-nine thousand, four hundred seventy-one".