2277439961 has 2 divisors, whose sum is σ = 2277439962. Its totient is φ = 2277439960.

The previous prime is 2277439933. The next prime is 2277439963. The reversal of 2277439961 is 1699347722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1462680025 + 814759936 = 38245^2 + 28544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2277439961 is a prime.

Together with 2277439963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2277439963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138719980 + 1138719981.

It is an arithmetic number, because the mean of its divisors is an integer number (1138719981).

Almost surely, 2^2277439961 is an apocalyptic number.

It is an amenable number.

2277439961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2277439961 is an equidigital number, since it uses as much as digits as its factorization.

2277439961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 2277439961 is about 47722.5309576095. The cubic root of 2277439961 is about 1315.6760798421.

The spelling of 2277439961 in words is "two billion, two hundred seventy-seven million, four hundred thirty-nine thousand, nine hundred sixty-one".