463987978 has 8 divisors (see below), whose sum is σ = 696157668. Its totient is φ = 231935424.

The previous prime is 463987973. The next prime is 463988009. The reversal of 463987978 is 879789364.

It can be written as a sum of positive squares in 2 ways, for example, as 432099369 + 31888609 = 20787^2 + 5647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (463987973) 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, 18601 + ... + 35692.

Almost surely, 2^463987978 is an apocalyptic number.

463987978 is a deficient number, since it is larger than the sum of its proper divisors (232169690).

463987978 is a wasteful number, since it uses less digits than its factorization.

463987978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58568.

The product of its digits is 18289152, while the sum is 61.

The square root of 463987978 is about 21540.3801730610. The cubic root of 463987978 is about 774.1686419070.

The spelling of 463987978 in words is "four hundred sixty-three million, nine hundred eighty-seven thousand, nine hundred seventy-eight".