64047109 has 32 divisors (see below), whose sum is σ = 81665280. Its totient is φ = 48964608.

The previous prime is 64047107. The next prime is 64047121. The reversal of 64047109 is 90174046.

It is not a de Polignac number, because 64047109 - 2¹ = 64047107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64047107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231079 + ... + 231355.

It is an arithmetic number, because the mean of its divisors is an integer number (2552040).

Almost surely, 2^64047109 is an apocalyptic number.

It is an amenable number.

64047109 is a deficient number, since it is larger than the sum of its proper divisors (17618171).

64047109 is a wasteful number, since it uses less digits than its factorization.

64047109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64047109 is about 8002.9437708883. The cubic root of 64047109 is about 400.0981196794.

The spelling of 64047109 in words is "sixty-four million, forty-seven thousand, one hundred nine".