491252629 has 24 divisors (see below), whose sum is σ = 586584960. Its totient is φ = 402965280.

The previous prime is 491252627. The next prime is 491252633. The reversal of 491252629 is 926252194.

It is not a de Polignac number, because 491252629 - 2¹ = 491252627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491252591 and 491252600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491252623) 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, 692527 + ... + 693235.

It is an arithmetic number, because the mean of its divisors is an integer number (24441040).

Almost surely, 2^491252629 is an apocalyptic number.

It is an amenable number.

491252629 is a deficient number, since it is larger than the sum of its proper divisors (95332331).

491252629 is a wasteful number, since it uses less digits than its factorization.

491252629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 850 counting only the distinct ones).

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

The square root of 491252629 is about 22164.2195666800. The cubic root of 491252629 is about 789.0447402641.

The spelling of 491252629 in words is "four hundred ninety-one million, two hundred fifty-two thousand, six hundred twenty-nine".