40564494 has 24 divisors (see below), whose sum is σ = 89096592. Its totient is φ = 13335840.

The previous prime is 40564493. The next prime is 40564541. The reversal of 40564494 is 49446504.

40564494 is a `hidden beast` number, since 4 + 0 + 5 + 644 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40564493) 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, 14122 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (3712358).

Almost surely, 2^40564494 is an apocalyptic number.

40564494 is an abundant number, since it is smaller than the sum of its proper divisors (48532098).

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

40564494 is a wasteful number, since it uses less digits than its factorization.

40564494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30952 (or 30949 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 40564494 is about 6369.0261421979. The cubic root of 40564494 is about 343.5964654732.

The spelling of 40564494 in words is "forty million, five hundred sixty-four thousand, four hundred ninety-four".