40064164 has 36 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 16922640.

The previous prime is 40064161. The next prime is 40064197. The reversal of 40064164 is 46146004.

It is not an unprimeable number, because it can be changed into a prime (40064161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12477 + ... + 15355.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^40064164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40064164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41368320).

40064164 is an abundant number, since it is smaller than the sum of its proper divisors (42672476).

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

40064164 is a wasteful number, since it uses less digits than its factorization.

40064164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968 (or 2959 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40064164 is about 6329.6258973181. The cubic root of 40064164 is about 342.1779564723.

The spelling of 40064164 in words is "forty million, sixty-four thousand, one hundred sixty-four".