491029491 has 8 divisors (see below), whose sum is σ = 675825664. Its totient is φ = 316793160.

The previous prime is 491029439. The next prime is 491029493. The reversal of 491029491 is 194920194.

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

It is not a de Polignac number, because 491029491 - 2¹¹ = 491027443 is a prime.

It is a super-2 number, since 2×491029491² = 482219922063438162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491029493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2639851 + ... + 2640036.

It is an arithmetic number, because the mean of its divisors is an integer number (84478208).

Almost surely, 2^491029491 is an apocalyptic number.

491029491 is a deficient number, since it is larger than the sum of its proper divisors (184796173).

491029491 is a wasteful number, since it uses less digits than its factorization.

491029491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279921.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 491029491 is about 22159.1852512677. The cubic root of 491029491 is about 788.9252548784.

The spelling of 491029491 in words is "four hundred ninety-one million, twenty-nine thousand, four hundred ninety-one".