491269 has 4 divisors (see below), whose sum is σ = 493696. Its totient is φ = 488844.

The previous prime is 491261. The next prime is 491273. The reversal of 491269 is 962194.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 962194 = 2 ⋅481097.

It is a cyclic number.

It is not a de Polignac number, because 491269 - 2³ = 491261 is a prime.

It is a super-2 number, since 2×491269² = 482690460722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (123424).

2⁴⁹¹²⁶⁹ is an apocalyptic number.

It is an amenable number.

491269 is a deficient number, since it is larger than the sum of its proper divisors (2427).

491269 is a wasteful number, since it uses less digits than its factorization.

491269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its digits is 3888, while the sum is 31.

The square root of 491269 is about 700.9058424639. The cubic root of 491269 is about 78.9053505142.

The spelling of 491269 in words is "four hundred ninety-one thousand, two hundred sixty-nine".