4446961391 has 2 divisors, whose sum is σ = 4446961392. Its totient is φ = 4446961390.

The previous prime is 4446961373. The next prime is 4446961403. The reversal of 4446961391 is 1931696444.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4446961391 - 2⁶ = 4446961327 is a prime.

It is a super-2 number, since 2×4446961391² = 39550931226089309762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4446961091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223480695 + 2223480696.

It is an arithmetic number, because the mean of its divisors is an integer number (2223480696).

Almost surely, 2^4446961391 is an apocalyptic number.

4446961391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4446961391 is an equidigital number, since it uses as much as digits as its factorization.

4446961391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 4446961391 is about 66685.5410940033. The cubic root of 4446961391 is about 1644.4516905166.

The spelling of 4446961391 in words is "four billion, four hundred forty-six million, nine hundred sixty-one thousand, three hundred ninety-one".