864679450 has 12 divisors (see below), whose sum is σ = 1608303870. Its totient is φ = 345871760.

The previous prime is 864679447. The next prime is 864679469. The reversal of 864679450 is 54976468.

It can be written as a sum of positive squares in 3 ways, for example, as 812421009 + 52258441 = 28503^2 + 7229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 864679394 and 864679403.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8646745 + ... + 8646844.

Almost surely, 2^864679450 is an apocalyptic number.

864679450 is a deficient number, since it is larger than the sum of its proper divisors (743624420).

864679450 is a wasteful number, since it uses less digits than its factorization.

864679450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17293601 (or 17293596 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 864679450 is about 29405.4323212566. The cubic root of 864679450 is about 952.6902323480.

The spelling of 864679450 in words is "eight hundred sixty-four million, six hundred seventy-nine thousand, four hundred fifty".