63924139 has 4 divisors (see below), whose sum is σ = 65986240. Its totient is φ = 61862040.

The previous prime is 63924137. The next prime is 63924143. The reversal of 63924139 is 93142936.

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 63924139 - 2¹ = 63924137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63924098 and 63924107.

It is not an unprimeable number, because it can be changed into a prime (63924137) 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, 1031004 + ... + 1031065.

It is an arithmetic number, because the mean of its divisors is an integer number (16496560).

Almost surely, 2^63924139 is an apocalyptic number.

63924139 is a deficient number, since it is larger than the sum of its proper divisors (2062101).

63924139 is a wasteful number, since it uses less digits than its factorization.

63924139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062100.

The product of its digits is 34992, while the sum is 37.

The square root of 63924139 is about 7995.2572816639. The cubic root of 63924139 is about 399.8418937643.

The spelling of 63924139 in words is "sixty-three million, nine hundred twenty-four thousand, one hundred thirty-nine".