491814396 has 48 divisors (see below), whose sum is σ = 1279236000. Its totient is φ = 163403136.

The previous prime is 491814361. The next prime is 491814457. The reversal of 491814396 is 693418194.

It is a super-2 number, since 2×491814396² = 483762800225689632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26530 + ... + 41078.

It is an arithmetic number, because the mean of its divisors is an integer number (26650750).

Almost surely, 2^491814396 is an apocalyptic number.

It is an amenable number.

491814396 is an abundant number, since it is smaller than the sum of its proper divisors (787421604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491814396 is a wasteful number, since it uses less digits than its factorization.

491814396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14875 (or 14867 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 491814396 is about 22176.8887808908. Note that the first 3 decimals coincide. The cubic root of 491814396 is about 789.3453937475.

The spelling of 491814396 in words is "four hundred ninety-one million, eight hundred fourteen thousand, three hundred ninety-six".