491454737 has 8 divisors (see below), whose sum is σ = 494696160. Its totient is φ = 488224000.

The previous prime is 491454709. The next prime is 491454763. The reversal of 491454737 is 737454194.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 491454737 - 2⁶ = 491454673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491454787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102833 + ... + 107505.

It is an arithmetic number, because the mean of its divisors is an integer number (61837020).

Almost surely, 2^491454737 is an apocalyptic number.

It is an amenable number.

491454737 is a deficient number, since it is larger than the sum of its proper divisors (3241423).

491454737 is a wasteful number, since it uses less digits than its factorization.

491454737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343.

The product of its digits is 423360, while the sum is 44.

The square root of 491454737 is about 22168.7784282310. The cubic root of 491454737 is about 789.1529333338.

The spelling of 491454737 in words is "four hundred ninety-one million, four hundred fifty-four thousand, seven hundred thirty-seven".