491327949 has 24 divisors (see below), whose sum is σ = 765076800. Its totient is φ = 280352520.

The previous prime is 491327929. The next prime is 491327957. The reversal of 491327949 is 949723194.

It is a happy number.

It is not a de Polignac number, because 491327949 - 2⁵ = 491327917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 491327898 and 491327907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491327929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 710694 + ... + 711384.

It is an arithmetic number, because the mean of its divisors is an integer number (31878200).

Almost surely, 2^491327949 is an apocalyptic number.

491327949 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

491327949 is a deficient number, since it is larger than the sum of its proper divisors (273748851).

491327949 is an frugal number, since it uses more digits than its factorization.

491327949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406 (or 701 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 491327949 is about 22165.9186365014. The cubic root of 491327949 is about 789.0850642639.

The spelling of 491327949 in words is "four hundred ninety-one million, three hundred twenty-seven thousand, nine hundred forty-nine".