440222557 has 2 divisors, whose sum is σ = 440222558. Its totient is φ = 440222556.

The previous prime is 440222483. The next prime is 440222561. The reversal of 440222557 is 755222044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363817476 + 76405081 = 19074^2 + 8741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440222557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440223557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220111278 + 220111279.

It is an arithmetic number, because the mean of its divisors is an integer number (220111279).

Almost surely, 2^440222557 is an apocalyptic number.

It is an amenable number.

440222557 is a deficient number, since it is larger than the sum of its proper divisors (1).

440222557 is an equidigital number, since it uses as much as digits as its factorization.

440222557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 440222557 is about 20981.4812870779. The cubic root of 440222557 is about 760.7187089749.

The spelling of 440222557 in words is "four hundred forty million, two hundred twenty-two thousand, five hundred fifty-seven".