63909416 has 16 divisors (see below), whose sum is σ = 119920500. Its totient is φ = 31930624.

The previous prime is 63909413. The next prime is 63909421. The reversal of 63909416 is 61490936.

It can be written as a sum of positive squares in 2 ways, for example, as 58828900 + 5080516 = 7670^2 + 2254^2 .

It is a super-2 number, since 2×63909416² = 8168826906922112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63909416.

It is not an unprimeable number, because it can be changed into a prime (63909413) 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, 13760 + ... + 17808.

Almost surely, 2^63909416 is an apocalyptic number.

It is an amenable number.

63909416 is a deficient number, since it is larger than the sum of its proper divisors (56011084).

63909416 is a wasteful number, since it uses less digits than its factorization.

63909416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028 (or 6024 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 63909416 is about 7994.3364952947. The cubic root of 63909416 is about 399.8111942283.

The spelling of 63909416 in words is "sixty-three million, nine hundred nine thousand, four hundred sixteen".