64009494 has 16 divisors (see below), whose sum is σ = 142243440. Its totient is φ = 21336480.

The previous prime is 64009493. The next prime is 64009507. The reversal of 64009494 is 49490046.

64009494 is a `hidden beast` number, since 640 + 0 + 9 + 4 + 9 + 4 = 666.

64009494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64009493) by changing a digit.

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, 592627 + ... + 592734.

It is an arithmetic number, because the mean of its divisors is an integer number (8890215).

Almost surely, 2^64009494 is an apocalyptic number.

64009494 is an abundant number, since it is smaller than the sum of its proper divisors (78233946).

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

64009494 is a wasteful number, since it uses less digits than its factorization.

64009494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185372 (or 1185366 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 64009494 is about 8000.5933529958. The cubic root of 64009494 is about 400.0197781887.

The spelling of 64009494 in words is "sixty-four million, nine thousand, four hundred ninety-four".