64153839 has 4 divisors (see below), whose sum is σ = 85538456. Its totient is φ = 42769224.

The previous prime is 64153813. The next prime is 64153841. The reversal of 64153839 is 93835146.

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

It is not a de Polignac number, because 64153839 - 2⁷ = 64153711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64153797 and 64153806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64153039) 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 3 ways as a sum of consecutive naturals, for example, 10692304 + ... + 10692309.

It is an arithmetic number, because the mean of its divisors is an integer number (21384614).

Almost surely, 2^64153839 is an apocalyptic number.

64153839 is a deficient number, since it is larger than the sum of its proper divisors (21384617).

64153839 is a wasteful number, since it uses less digits than its factorization.

64153839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21384616.

The product of its digits is 77760, while the sum is 39.

The square root of 64153839 is about 8009.6091664950. The cubic root of 64153839 is about 400.3202414618.

The spelling of 64153839 in words is "sixty-four million, one hundred fifty-three thousand, eight hundred thirty-nine".