90589887 has 8 divisors (see below), whose sum is σ = 134207280. Its totient is φ = 60393240.

The previous prime is 90589871. The next prime is 90589897. The reversal of 90589887 is 78898509.

It is not a de Polignac number, because 90589887 - 2⁴ = 90589871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90589897) 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, 1677564 + ... + 1677617.

It is an arithmetic number, because the mean of its divisors is an integer number (16775910).

Almost surely, 2^90589887 is an apocalyptic number.

90589887 is a deficient number, since it is larger than the sum of its proper divisors (43617393).

90589887 is a wasteful number, since it uses less digits than its factorization.

90589887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355190 (or 3355184 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 90589887 is about 9517.8719785465. The cubic root of 90589887 is about 449.1174257153.

The spelling of 90589887 in words is "ninety million, five hundred eighty-nine thousand, eight hundred eighty-seven".