814289261 has 4 divisors (see below), whose sum is σ = 824596800. Its totient is φ = 803981724.

The previous prime is 814289249. The next prime is 814289269. The reversal of 814289261 is 162982418.

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 814289261 - 2¹⁸ = 814027117 is a prime.

It is a super-2 number, since 2×814289261² = 1326134001159852242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814289269) 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, 5153651 + ... + 5153808.

It is an arithmetic number, because the mean of its divisors is an integer number (206149200).

Almost surely, 2^814289261 is an apocalyptic number.

It is an amenable number.

814289261 is a deficient number, since it is larger than the sum of its proper divisors (10307539).

814289261 is a wasteful number, since it uses less digits than its factorization.

814289261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10307538.

The product of its digits is 55296, while the sum is 41.

The square root of 814289261 is about 28535.7540815027. The cubic root of 814289261 is about 933.8122548749.

The spelling of 814289261 in words is "eight hundred fourteen million, two hundred eighty-nine thousand, two hundred sixty-one".