63403799 has 4 divisors (see below), whose sum is σ = 64752864. Its totient is φ = 62054736.

The previous prime is 63403771. The next prime is 63403807. The reversal of 63403799 is 99730436.

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

It is a cyclic number.

It is not a de Polignac number, because 63403799 - 2¹² = 63399703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63483799) 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 3 ways as a sum of consecutive naturals, for example, 674462 + ... + 674555.

It is an arithmetic number, because the mean of its divisors is an integer number (16188216).

Almost surely, 2^63403799 is an apocalyptic number.

63403799 is a deficient number, since it is larger than the sum of its proper divisors (1349065).

63403799 is a wasteful number, since it uses less digits than its factorization.

63403799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349064.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 63403799 is about 7962.6502497598. The cubic root of 63403799 is about 398.7540375570.

The spelling of 63403799 in words is "sixty-three million, four hundred three thousand, seven hundred ninety-nine".