40591089 has 24 divisors (see below), whose sum is σ = 73100352. Its totient is φ = 21085920.

The previous prime is 40591081. The next prime is 40591091. The reversal of 40591089 is 98019504.

It is not a de Polignac number, because 40591089 - 2³ = 40591081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40591081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28594 + ... + 29979.

It is an arithmetic number, because the mean of its divisors is an integer number (3045848).

Almost surely, 2^40591089 is an apocalyptic number.

It is an amenable number.

40591089 is a deficient number, since it is larger than the sum of its proper divisors (32509263).

40591089 is a wasteful number, since it uses less digits than its factorization.

40591089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58597 (or 58594 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 40591089 is about 6371.1136389175. The cubic root of 40591089 is about 343.6715389411.

The spelling of 40591089 in words is "forty million, five hundred ninety-one thousand, eighty-nine".