64408894 has 32 divisors (see below), whose sum is σ = 108573696. Its totient is φ = 28405920.

The previous prime is 64408891. The next prime is 64408919. The reversal of 64408894 is 49880446.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64408894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64408891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172492 + ... + 172864.

It is an arithmetic number, because the mean of its divisors is an integer number (3392928).

Almost surely, 2^64408894 is an apocalyptic number.

64408894 is a deficient number, since it is larger than the sum of its proper divisors (44164802).

64408894 is a wasteful number, since it uses less digits than its factorization.

64408894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 64408894 is about 8025.5151859554. The cubic root of 64408894 is about 400.8500547377.

The spelling of 64408894 in words is "sixty-four million, four hundred eight thousand, eight hundred ninety-four".