64839398 has 16 divisors (see below), whose sum is σ = 105280560. Its totient is φ = 29771616.

The previous prime is 64839373. The next prime is 64839421. The reversal of 64839398 is 89393846.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (6580035).

Almost surely, 2^64839398 is an apocalyptic number.

64839398 is a deficient number, since it is larger than the sum of its proper divisors (40441162).

64839398 is a wasteful number, since it uses less digits than its factorization.

64839398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871.

The product of its digits is 1119744, while the sum is 50.

The square root of 64839398 is about 8052.2914751020. The cubic root of 64839398 is about 401.7411557778.

The spelling of 64839398 in words is "sixty-four million, eight hundred thirty-nine thousand, three hundred ninety-eight".