64141909 has 16 divisors (see below), whose sum is σ = 70741440. Its totient is φ = 57795840.

The previous prime is 64141859. The next prime is 64141921. The reversal of 64141909 is 90914146.

It is a cyclic number.

It is not a de Polignac number, because 64141909 - 2¹⁵ = 64109141 is a prime.

It is a super-2 number, since 2×64141909² = 8228368980328562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64141949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184674 + ... + 185020.

It is an arithmetic number, because the mean of its divisors is an integer number (4421340).

Almost surely, 2^64141909 is an apocalyptic number.

It is an amenable number.

64141909 is a deficient number, since it is larger than the sum of its proper divisors (6599531).

64141909 is a wasteful number, since it uses less digits than its factorization.

64141909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 64141909 is about 8008.8644013992. The cubic root of 64141909 is about 400.2954255057.

The spelling of 64141909 in words is "sixty-four million, one hundred forty-one thousand, nine hundred nine".