63239213 has 4 divisors (see below), whose sum is σ = 65988768. Its totient is φ = 60489660.

The previous prime is 63239191. The next prime is 63239221. The reversal of 63239213 is 31293236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63239213 - 2²⁴ = 46461997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63239233) 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, 1374743 + ... + 1374788.

It is an arithmetic number, because the mean of its divisors is an integer number (16497192).

Almost surely, 2^63239213 is an apocalyptic number.

It is an amenable number.

63239213 is a deficient number, since it is larger than the sum of its proper divisors (2749555).

63239213 is a wasteful number, since it uses less digits than its factorization.

63239213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749554.

The product of its digits is 5832, while the sum is 29.

The square root of 63239213 is about 7952.3086584966. The cubic root of 63239213 is about 398.4087049281.

The spelling of 63239213 in words is "sixty-three million, two hundred thirty-nine thousand, two hundred thirteen".