944129261 has 2 divisors, whose sum is σ = 944129262. Its totient is φ = 944129260.

The previous prime is 944129257. The next prime is 944129287. The reversal of 944129261 is 162921449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773173636 + 170955625 = 27806^2 + 13075^2 .

It is a cyclic number.

It is not a de Polignac number, because 944129261 - 2² = 944129257 is a prime.

It is a super-2 number, since 2×944129261² = 1782760122952812242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (944129201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472064630 + 472064631.

It is an arithmetic number, because the mean of its divisors is an integer number (472064631).

Almost surely, 2^944129261 is an apocalyptic number.

It is an amenable number.

944129261 is a deficient number, since it is larger than the sum of its proper divisors (1).

944129261 is an equidigital number, since it uses as much as digits as its factorization.

944129261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 944129261 is about 30726.6864630731. The cubic root of 944129261 is about 981.0183988489.

The spelling of 944129261 in words is "nine hundred forty-four million, one hundred twenty-nine thousand, two hundred sixty-one".