630479849 has 8 divisors (see below), whose sum is σ = 642583680. Its totient is φ = 618455376.

The previous prime is 630479821. The next prime is 630479851. The reversal of 630479849 is 948974036.

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

It is a cyclic number.

It is not a de Polignac number, because 630479849 - 2²⁴ = 613702633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 630479797 and 630479806.

It is not an unprimeable number, because it can be changed into a prime (630479819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674 + ... + 35699.

It is an arithmetic number, because the mean of its divisors is an integer number (80322960).

Almost surely, 2^630479849 is an apocalyptic number.

It is an amenable number.

630479849 is a deficient number, since it is larger than the sum of its proper divisors (12103831).

630479849 is a wasteful number, since it uses less digits than its factorization.

630479849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39679.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 630479849 is about 25109.3577974428. The cubic root of 630479849 is about 857.4794818109.

The spelling of 630479849 in words is "six hundred thirty million, four hundred seventy-nine thousand, eight hundred forty-nine".