944764861 has 2 divisors, whose sum is σ = 944764862. Its totient is φ = 944764860.

The previous prime is 944764841. The next prime is 944764901. The reversal of 944764861 is 168467449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525784900 + 418979961 = 22930^2 + 20469^2 .

It is an emirp because it is prime and its reverse (168467449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 944764861 - 2⁵ = 944764829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (944764841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472382430 + 472382431.

It is an arithmetic number, because the mean of its divisors is an integer number (472382431).

Almost surely, 2^944764861 is an apocalyptic number.

It is an amenable number.

944764861 is a deficient number, since it is larger than the sum of its proper divisors (1).

944764861 is an equidigital number, since it uses as much as digits as its factorization.

944764861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 944764861 is about 30737.0275238189. The cubic root of 944764861 is about 981.2384942137.

The spelling of 944764861 in words is "nine hundred forty-four million, seven hundred sixty-four thousand, eight hundred sixty-one".