90489613 has 8 divisors (see below), whose sum is σ = 95007168. Its totient is φ = 86020704.

The previous prime is 90489611. The next prime is 90489629. The reversal of 90489613 is 31698409.

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

It is a cyclic number.

It is not a de Polignac number, because 90489613 - 2¹ = 90489611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90489611) 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, 8320 + ... + 15817.

It is an arithmetic number, because the mean of its divisors is an integer number (11875896).

Almost surely, 2^90489613 is an apocalyptic number.

It is an amenable number.

90489613 is a deficient number, since it is larger than the sum of its proper divisors (4517555).

90489613 is a wasteful number, since it uses less digits than its factorization.

90489613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24323.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 90489613 is about 9512.6028509551. The cubic root of 90489613 is about 448.9516550875.

The spelling of 90489613 in words is "ninety million, four hundred eighty-nine thousand, six hundred thirteen".