63996239 has 4 divisors (see below), whose sum is σ = 64029240. Its totient is φ = 63963240.

The previous prime is 63996227. The next prime is 63996271. The reversal of 63996239 is 93269936.

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

It is a cyclic number.

It is not a de Polignac number, because 63996239 - 2¹² = 63992143 is a prime.

It is a super-2 number, since 2×63996239² = 8191037212290242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63996193 and 63996202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63996209) 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, 13397 + ... + 17534.

It is an arithmetic number, because the mean of its divisors is an integer number (16007310).

Almost surely, 2^63996239 is an apocalyptic number.

63996239 is a deficient number, since it is larger than the sum of its proper divisors (33001).

63996239 is a wasteful number, since it uses less digits than its factorization.

63996239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33000.

The product of its digits is 472392, while the sum is 47.

The square root of 63996239 is about 7999.7649340465. The cubic root of 63996239 is about 399.9921644298.

The spelling of 63996239 in words is "sixty-three million, nine hundred ninety-six thousand, two hundred thirty-nine".