63859539 has 4 divisors (see below), whose sum is σ = 85146056. Its totient is φ = 42573024.

The previous prime is 63859529. The next prime is 63859553. The reversal of 63859539 is 93595836.

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

It is not a de Polignac number, because 63859539 - 2⁵ = 63859507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63859529) 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, 10643254 + ... + 10643259.

It is an arithmetic number, because the mean of its divisors is an integer number (21286514).

Almost surely, 2^63859539 is an apocalyptic number.

63859539 is a deficient number, since it is larger than the sum of its proper divisors (21286517).

63859539 is a wasteful number, since it uses less digits than its factorization.

63859539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21286516.

The product of its digits is 874800, while the sum is 48.

The square root of 63859539 is about 7991.2163654853. The cubic root of 63859539 is about 399.7071585787.

The spelling of 63859539 in words is "sixty-three million, eight hundred fifty-nine thousand, five hundred thirty-nine".