4044370691 has 2 divisors, whose sum is σ = 4044370692. Its totient is φ = 4044370690.

The previous prime is 4044370621. The next prime is 4044370721. The reversal of 4044370691 is 1960734404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4044370691 is a prime.

It is not a weakly prime, because it can be changed into another prime (4044370621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022185345 + 2022185346.

It is an arithmetic number, because the mean of its divisors is an integer number (2022185346).

Almost surely, 2^4044370691 is an apocalyptic number.

4044370691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044370691 is an equidigital number, since it uses as much as digits as its factorization.

4044370691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 4044370691 is about 63595.3668988551. The cubic root of 4044370691 is about 1593.2489886911.

The spelling of 4044370691 in words is "four billion, forty-four million, three hundred seventy thousand, six hundred ninety-one".