4044001961 has 2 divisors, whose sum is σ = 4044001962. Its totient is φ = 4044001960.

The previous prime is 4044001957. The next prime is 4044001963. The reversal of 4044001961 is 1691004404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2857543936 + 1186458025 = 53456^2 + 34445^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044001961 - 2² = 4044001957 is a prime.

Together with 4044001963, 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 (4044001963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022000980 + 2022000981.

It is an arithmetic number, because the mean of its divisors is an integer number (2022000981).

Almost surely, 2^4044001961 is an apocalyptic number.

It is an amenable number.

4044001961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044001961 is an equidigital number, since it uses as much as digits as its factorization.

4044001961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4044001961 is about 63592.4678008331. The cubic root of 4044001961 is about 1593.2005677624.

The spelling of 4044001961 in words is "four billion, forty-four million, one thousand, nine hundred sixty-one".