63962639 has 4 divisors (see below), whose sum is σ = 68882856. Its totient is φ = 59042424.

The previous prime is 63962621. The next prime is 63962651. The reversal of 63962639 is 93626936.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63962639 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 63962639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63962669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2460089 + ... + 2460114.

It is an arithmetic number, because the mean of its divisors is an integer number (17220714).

Almost surely, 2^63962639 is an apocalyptic number.

63962639 is a deficient number, since it is larger than the sum of its proper divisors (4920217).

63962639 is a wasteful number, since it uses less digits than its factorization.

63962639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920216.

The product of its digits is 314928, while the sum is 44.

The square root of 63962639 is about 7997.6645966182. The cubic root of 63962639 is about 399.9221494325.

The spelling of 63962639 in words is "sixty-three million, nine hundred sixty-two thousand, six hundred thirty-nine".