64408079 has 4 divisors (see below), whose sum is σ = 64978176. Its totient is φ = 63837984.

The previous prime is 64408061. The next prime is 64408129. The reversal of 64408079 is 97080446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64408079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64408039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284879 + ... + 285104.

It is an arithmetic number, because the mean of its divisors is an integer number (16244544).

Almost surely, 2^64408079 is an apocalyptic number.

64408079 is a deficient number, since it is larger than the sum of its proper divisors (570097).

64408079 is a wasteful number, since it uses less digits than its factorization.

64408079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570096.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 64408079 is about 8025.4644102382. The cubic root of 64408079 is about 400.8483640076.

The spelling of 64408079 in words is "sixty-four million, four hundred eight thousand, seventy-nine".