63939197 has 8 divisors (see below), whose sum is σ = 73313856. Its totient is φ = 54624672.

The previous prime is 63939181. The next prime is 63939209. The reversal of 63939197 is 79193936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63939197 - 2⁴ = 63939181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63939157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12728 + ... + 17025.

It is an arithmetic number, because the mean of its divisors is an integer number (9164232).

Almost surely, 2^63939197 is an apocalyptic number.

It is an amenable number.

63939197 is a deficient number, since it is larger than the sum of its proper divisors (9374659).

63939197 is a wasteful number, since it uses less digits than its factorization.

63939197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30067.

The product of its digits is 275562, while the sum is 47.

The square root of 63939197 is about 7996.1989094819. The cubic root of 63939197 is about 399.8732869471.

The spelling of 63939197 in words is "sixty-three million, nine hundred thirty-nine thousand, one hundred ninety-seven".