491272437 has 8 divisors (see below), whose sum is σ = 658460160. Its totient is φ = 325799840.

The previous prime is 491272427. The next prime is 491272447. The reversal of 491272437 is 734272194.

It is an interprime number because it is at equal distance from previous prime (491272427) and next prime (491272447).

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 491272437 - 2¹¹ = 491270389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491272395 and 491272404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491272427) 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, 428112 + ... + 429257.

It is an arithmetic number, because the mean of its divisors is an integer number (82307520).

Almost surely, 2^491272437 is an apocalyptic number.

It is an amenable number.

491272437 is a deficient number, since it is larger than the sum of its proper divisors (167187723).

491272437 is a wasteful number, since it uses less digits than its factorization.

491272437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857563.

The product of its digits is 84672, while the sum is 39.

The square root of 491272437 is about 22164.6664084980. Note that the first 3 decimals coincide. The cubic root of 491272437 is about 789.0553452545.

The spelling of 491272437 in words is "four hundred ninety-one million, two hundred seventy-two thousand, four hundred thirty-seven".