40564089 has 12 divisors (see below), whose sum is σ = 60483072. Its totient is φ = 26170200.

The previous prime is 40564081. The next prime is 40564103. The reversal of 40564089 is 98046504.

40564089 is a `hidden beast` number, since 4 + 0 + 5 + 640 + 8 + 9 = 666.

It is not a de Polignac number, because 40564089 - 2³ = 40564081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40564081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72417 + ... + 72974.

It is an arithmetic number, because the mean of its divisors is an integer number (5040256).

Almost surely, 2^40564089 is an apocalyptic number.

It is an amenable number.

40564089 is a deficient number, since it is larger than the sum of its proper divisors (19918983).

40564089 is a wasteful number, since it uses less digits than its factorization.

40564089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145428 (or 145425 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40564089 is about 6368.9943476188. The cubic root of 40564089 is about 343.5953219688.

The spelling of 40564089 in words is "forty million, five hundred sixty-four thousand, eighty-nine".