1397222899 has 2 divisors, whose sum is σ = 1397222900. Its totient is φ = 1397222898.

The previous prime is 1397222867. The next prime is 1397222903. The reversal of 1397222899 is 9982227931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1397222899 - 2⁵ = 1397222867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1397222839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698611449 + 698611450.

It is an arithmetic number, because the mean of its divisors is an integer number (698611450).

Almost surely, 2^1397222899 is an apocalyptic number.

1397222899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397222899 is an equidigital number, since it uses as much as digits as its factorization.

1397222899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 52.

The square root of 1397222899 is about 37379.4448728175. Note that the first 3 decimals coincide. The cubic root of 1397222899 is about 1117.9487590696.

The spelling of 1397222899 in words is "one billion, three hundred ninety-seven million, two hundred twenty-two thousand, eight hundred ninety-nine".