90988471 has 24 divisors (see below), whose sum is σ = 113260896. Its totient is φ = 71546880.

The previous prime is 90988463. The next prime is 90988477. The reversal of 90988471 is 17488909.

It is a happy number.

It is not a de Polignac number, because 90988471 - 2³ = 90988463 is a prime.

It is a super-3 number, since 3×90988471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90988477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82395 + ... + 83491.

It is an arithmetic number, because the mean of its divisors is an integer number (4719204).

Almost surely, 2^90988471 is an apocalyptic number.

90988471 is a deficient number, since it is larger than the sum of its proper divisors (22272425).

90988471 is a wasteful number, since it uses less digits than its factorization.

90988471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 90988471 is about 9538.7877112346. The cubic root of 90988471 is about 449.7751485726.

The spelling of 90988471 in words is "ninety million, nine hundred eighty-eight thousand, four hundred seventy-one".