491069 has 4 divisors (see below), whose sum is σ = 492960. Its totient is φ = 489180.

The previous prime is 491059. The next prime is 491081. The reversal of 491069 is 960194.

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.

It is a cyclic number.

It is not a de Polignac number, because 491069 - 2¹⁶ = 425533 is a prime.

It is a super-2 number, since 2×491069² = 482297525522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491069.

It is not an unprimeable number, because it can be changed into a prime (491039) 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, 479 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (123240).

2⁴⁹¹⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

491069 is a deficient number, since it is larger than the sum of its proper divisors (1891).

491069 is a wasteful number, since it uses less digits than its factorization.

491069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 491069 is about 700.7631554241. The cubic root of 491069 is about 78.8946413697.

The spelling of 491069 in words is "four hundred ninety-one thousand, sixty-nine".