63539941 has 4 divisors (see below), whose sum is σ = 63944812. Its totient is φ = 63135072.

The previous prime is 63539923. The next prime is 63539953. The reversal of 63539941 is 14993536.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6477025 + 57062916 = 2545^2 + 7554^2 .

It is a cyclic number.

It is not a de Polignac number, because 63539941 - 2¹³ = 63531749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63539894 and 63539903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63539921) 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, 202200 + ... + 202513.

It is an arithmetic number, because the mean of its divisors is an integer number (15986203).

Almost surely, 2^63539941 is an apocalyptic number.

It is an amenable number.

63539941 is a deficient number, since it is larger than the sum of its proper divisors (404871).

63539941 is a wasteful number, since it uses less digits than its factorization.

63539941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404870.

The product of its digits is 87480, while the sum is 40.

The square root of 63539941 is about 7971.1944525272. The cubic root of 63539941 is about 399.0392379382.

The spelling of 63539941 in words is "sixty-three million, five hundred thirty-nine thousand, nine hundred forty-one".