294489643561 has 9 divisors (see below), whose sum is σ = 295419990693. Its totient is φ = 293562222240.

The previous prime is 294489643549. The next prime is 294489643573. The reversal of 294489643561 is 165346984492.

The square root of 294489643561 is 542669.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (294489643549) and next prime (294489643573).

It can be written as a sum of positive squares in 4 ways, for example, as 40614743961 + 253874899600 = 201531^2 + 503860^2 .

It is not a de Polignac number, because 294489643561 - 2²⁵ = 294456089129 is a prime.

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 294489643561.

It is not an unprimeable number, because it can be changed into a prime (294489643361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 228463005 + ... + 228464293.

Almost surely, 2^294489643561 is an apocalyptic number.

294489643561 is the 542669-th square number.

294489643561 is the 271335-th centered octagonal number.

It is an amenable number.

294489643561 is a deficient number, since it is larger than the sum of its proper divisors (930347132).

294489643561 is an frugal number, since it uses more digits than its factorization.

294489643561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 1710 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 61.

The spelling of 294489643561 in words is "two hundred ninety-four billion, four hundred eighty-nine million, six hundred forty-three thousand, five hundred sixty-one".