63893992 has 8 divisors (see below), whose sum is σ = 119801250. Its totient is φ = 31946992.

The previous prime is 63893983. The next prime is 63893993. The reversal of 63893992 is 29939836.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41293476 + 22600516 = 6426^2 + 4754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (63893993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993367 + ... + 3993382.

Almost surely, 2^63893992 is an apocalyptic number.

It is an amenable number.

63893992 is a deficient number, since it is larger than the sum of its proper divisors (55907258).

63893992 is a wasteful number, since it uses less digits than its factorization.

63893992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986755 (or 7986751 counting only the distinct ones).

The product of its digits is 629856, while the sum is 49.

The square root of 63893992 is about 7993.3717541473. The cubic root of 63893992 is about 399.7790279509.

The spelling of 63893992 in words is "sixty-three million, eight hundred ninety-three thousand, nine hundred ninety-two".