4431244397 has 2 divisors, whose sum is σ = 4431244398. Its totient is φ = 4431244396.

The previous prime is 4431244381. The next prime is 4431244417. The reversal of 4431244397 is 7934421344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2255395081 + 2175849316 = 47491^2 + 46646^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431244397 - 2⁴ = 4431244381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4431244897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215622198 + 2215622199.

It is an arithmetic number, because the mean of its divisors is an integer number (2215622199).

Almost surely, 2^4431244397 is an apocalyptic number.

It is an amenable number.

4431244397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431244397 is an equidigital number, since it uses as much as digits as its factorization.

4431244397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 4431244397 is about 66567.5926934421. The cubic root of 4431244397 is about 1642.5120629688.

The spelling of 4431244397 in words is "four billion, four hundred thirty-one million, two hundred forty-four thousand, three hundred ninety-seven".