90847215 has 12 divisors (see below), whose sum is σ = 157468584. Its totient is φ = 48451824.

The previous prime is 90847199. The next prime is 90847219. The reversal of 90847215 is 51274809.

It is not a de Polignac number, because 90847215 - 2⁴ = 90847199 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90847215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90847219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1009369 + ... + 1009458.

It is an arithmetic number, because the mean of its divisors is an integer number (13122382).

Almost surely, 2^90847215 is an apocalyptic number.

90847215 is a deficient number, since it is larger than the sum of its proper divisors (66621369).

90847215 is a wasteful number, since it uses less digits than its factorization.

90847215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018838 (or 2018835 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 90847215 is about 9531.3805400897. The cubic root of 90847215 is about 449.5422753166.

The spelling of 90847215 in words is "ninety million, eight hundred forty-seven thousand, two hundred fifteen".