90485391 has 16 divisors (see below), whose sum is σ = 127850240. Its totient is φ = 56764800.

The previous prime is 90485389. The next prime is 90485399. The reversal of 90485391 is 19358409.

It is not a de Polignac number, because 90485391 - 2¹ = 90485389 is a prime.

It is a super-3 number, since 3×90485391³ (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 (90485399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3351 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (7990640).

Almost surely, 2^90485391 is an apocalyptic number.

90485391 is a deficient number, since it is larger than the sum of its proper divisors (37364849).

90485391 is a wasteful number, since it uses less digits than its factorization.

90485391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 90485391 is about 9512.3809322377. The cubic root of 90485391 is about 448.9446726899.

The spelling of 90485391 in words is "ninety million, four hundred eighty-five thousand, three hundred ninety-one".