63429913 has 4 divisors (see below), whose sum is σ = 63676980. Its totient is φ = 63182848.

The previous prime is 63429901. The next prime is 63429943. The reversal of 63429913 is 31992436.

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 54715609 + 8714304 = 7397^2 + 2952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63429913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63429943) 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, 123148 + ... + 123661.

It is an arithmetic number, because the mean of its divisors is an integer number (15919245).

Almost surely, 2^63429913 is an apocalyptic number.

It is an amenable number.

63429913 is a deficient number, since it is larger than the sum of its proper divisors (247067).

63429913 is a wasteful number, since it uses less digits than its factorization.

63429913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247066.

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

The square root of 63429913 is about 7964.2898616261. The cubic root of 63429913 is about 398.8087747275.

The spelling of 63429913 in words is "sixty-three million, four hundred twenty-nine thousand, nine hundred thirteen".