491420965 has 8 divisors (see below), whose sum is σ = 673948800. Its totient is φ = 336974352.

The previous prime is 491420953. The next prime is 491420981. The reversal of 491420965 is 569024194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491420965 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7020265 + ... + 7020334.

It is an arithmetic number, because the mean of its divisors is an integer number (84243600).

Almost surely, 2^491420965 is an apocalyptic number.

It is an amenable number.

491420965 is a deficient number, since it is larger than the sum of its proper divisors (182527835).

491420965 is a wasteful number, since it uses less digits than its factorization.

491420965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14040611.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 491420965 is about 22168.0167132741. The cubic root of 491420965 is about 789.1348564684.

The spelling of 491420965 in words is "four hundred ninety-one million, four hundred twenty thousand, nine hundred sixty-five".