64839238 has 8 divisors (see below), whose sum is σ = 97337520. Its totient is φ = 32393400.

The previous prime is 64839217. The next prime is 64839263. The reversal of 64839238 is 83293846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64839194 and 64839203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9858 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (12167190).

Almost surely, 2^64839238 is an apocalyptic number.

64839238 is a deficient number, since it is larger than the sum of its proper divisors (32498282).

64839238 is a wasteful number, since it uses less digits than its factorization.

64839238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26222.

The product of its digits is 248832, while the sum is 43.

The square root of 64839238 is about 8052.2815400357. The cubic root of 64839238 is about 401.7408253273.

The spelling of 64839238 in words is "sixty-four million, eight hundred thirty-nine thousand, two hundred thirty-eight".