64113839 has 2 divisors, whose sum is σ = 64113840. Its totient is φ = 64113838.

The previous prime is 64113821. The next prime is 64113869. The reversal of 64113839 is 93831146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64113839 - 2²⁰ = 63065263 is a prime.

It is a super-2 number, since 2×64113839² = 8221168702635842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64113799 and 64113808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64113869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32056919 + 32056920.

It is an arithmetic number, because the mean of its divisors is an integer number (32056920).

Almost surely, 2^64113839 is an apocalyptic number.

64113839 is a deficient number, since it is larger than the sum of its proper divisors (1).

64113839 is an equidigital number, since it uses as much as digits as its factorization.

64113839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 64113839 is about 8007.1117764148. Note that the first 3 decimals coincide. The cubic root of 64113839 is about 400.2370241045.

The spelling of 64113839 in words is "sixty-four million, one hundred thirteen thousand, eight hundred thirty-nine".