491933746 has 8 divisors (see below), whose sum is σ = 741977964. Its totient is φ = 244607760.

The previous prime is 491933719. The next prime is 491933747. The reversal of 491933746 is 647339194.

It can be written as a sum of positive squares in 2 ways, for example, as 471367521 + 20566225 = 21711^2 + 4535^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 491933696 and 491933705.

It is not an unprimeable number, because it can be changed into a prime (491933747) 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, 679105 + ... + 679828.

Almost surely, 2^491933746 is an apocalyptic number.

491933746 is a deficient number, since it is larger than the sum of its proper divisors (250044218).

491933746 is a wasteful number, since it uses less digits than its factorization.

491933746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359116.

The product of its digits is 489888, while the sum is 46.

The square root of 491933746 is about 22179.5794820371. The cubic root of 491933746 is about 789.4092394814.

The spelling of 491933746 in words is "four hundred ninety-one million, nine hundred thirty-three thousand, seven hundred forty-six".