491396450 has 12 divisors (see below), whose sum is σ = 913997490. Its totient is φ = 196558560.

The previous prime is 491396429. The next prime is 491396459. The reversal of 491396450 is 54693194.

It can be written as a sum of positive squares in 3 ways, for example, as 438441721 + 52954729 = 20939^2 + 7277^2 .

It is a junction number, because it is equal to n+sod(n) for n = 491396398 and 491396407.

It is not an unprimeable number, because it can be changed into a prime (491396459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4913915 + ... + 4914014.

Almost surely, 2^491396450 is an apocalyptic number.

491396450 is a deficient number, since it is larger than the sum of its proper divisors (422601040).

491396450 is a wasteful number, since it uses less digits than its factorization.

491396450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9827941 (or 9827936 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 491396450 is about 22167.4637701294. The cubic root of 491396450 is about 789.1217340037.

The spelling of 491396450 in words is "four hundred ninety-one million, three hundred ninety-six thousand, four hundred fifty".