491571429 has 8 divisors (see below), whose sum is σ = 665211360. Its totient is φ = 322822896.

The previous prime is 491571403. The next prime is 491571463. The reversal of 491571429 is 924175194.

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

It is not a de Polignac number, because 491571429 - 2⁹ = 491570917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491571499) 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, 1222614 + ... + 1223015.

It is an arithmetic number, because the mean of its divisors is an integer number (83151420).

Almost surely, 2^491571429 is an apocalyptic number.

It is an amenable number.

491571429 is a deficient number, since it is larger than the sum of its proper divisors (173639931).

491571429 is a wasteful number, since it uses less digits than its factorization.

491571429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445699.

The product of its digits is 90720, while the sum is 42.

The square root of 491571429 is about 22171.4101716603. The cubic root of 491571429 is about 789.2153877435.

The spelling of 491571429 in words is "four hundred ninety-one million, five hundred seventy-one thousand, four hundred twenty-nine".