4631399866 has 4 divisors (see below), whose sum is σ = 6947099802. Its totient is φ = 2315699932.

The previous prime is 4631399849. The next prime is 4631399887. The reversal of 4631399866 is 6689931364.

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

It can be written as a sum of positive squares in only one way, i.e., 4240744641 + 390655225 = 65121^2 + 19765^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157849965 + ... + 1157849968.

Almost surely, 2^4631399866 is an apocalyptic number.

4631399866 is a deficient number, since it is larger than the sum of its proper divisors (2315699936).

4631399866 is a wasteful number, since it uses less digits than its factorization.

4631399866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315699935.

The product of its digits is 5038848, while the sum is 55.

The square root of 4631399866 is about 68054.3890281883. The cubic root of 4631399866 is about 1666.8790679614.

The spelling of 4631399866 in words is "four billion, six hundred thirty-one million, three hundred ninety-nine thousand, eight hundred sixty-six".