90385471 has 8 divisors (see below), whose sum is σ = 98820864. Its totient is φ = 81986520.

The previous prime is 90385459. The next prime is 90385499. The reversal of 90385471 is 17458309.

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

It is not a de Polignac number, because 90385471 - 2⁵ = 90385439 is a prime.

It is a super-3 number, since 3×90385471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90385471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90385171) 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, 3781 + ... + 13966.

It is an arithmetic number, because the mean of its divisors is an integer number (12352608).

Almost surely, 2^90385471 is an apocalyptic number.

90385471 is a deficient number, since it is larger than the sum of its proper divisors (8435393).

90385471 is a wasteful number, since it uses less digits than its factorization.

90385471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 90385471 is about 9507.1273789721. The cubic root of 90385471 is about 448.7793602814.

The spelling of 90385471 in words is "ninety million, three hundred eighty-five thousand, four hundred seventy-one".