63940339 has 4 divisors (see below), whose sum is σ = 67305640. Its totient is φ = 60575040.

The previous prime is 63940333. The next prime is 63940379. The reversal of 63940339 is 93304936.

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

It is not a de Polignac number, because 63940339 - 2⁵ = 63940307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63940298 and 63940307.

It is not an unprimeable number, because it can be changed into a prime (63940333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682622 + ... + 1682659.

It is an arithmetic number, because the mean of its divisors is an integer number (16826410).

Almost surely, 2^63940339 is an apocalyptic number.

63940339 is a deficient number, since it is larger than the sum of its proper divisors (3365301).

63940339 is a wasteful number, since it uses less digits than its factorization.

63940339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365300.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 63940339 is about 7996.2703180921. The cubic root of 63940339 is about 399.8756676076.

The spelling of 63940339 in words is "sixty-three million, nine hundred forty thousand, three hundred thirty-nine".