90589040 has 40 divisors (see below), whose sum is σ = 217887840. Its totient is φ = 34985216.

The previous prime is 90589027. The next prime is 90589091. The reversal of 90589040 is 4098509.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17204 + ... + 21843.

It is an arithmetic number, because the mean of its divisors is an integer number (5447196).

Almost surely, 2^90589040 is an apocalyptic number.

It is an amenable number.

90589040 is an abundant number, since it is smaller than the sum of its proper divisors (127298800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90589040 is a wasteful number, since it uses less digits than its factorization.

90589040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39089 (or 39083 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 90589040 is about 9517.8274832022. The cubic root of 90589040 is about 449.1160259871.

The spelling of 90589040 in words is "ninety million, five hundred eighty-nine thousand, forty".