1398344099 has 2 divisors, whose sum is σ = 1398344100. Its totient is φ = 1398344098.

The previous prime is 1398344081. The next prime is 1398344111. The reversal of 1398344099 is 9904438931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1398344099 - 2¹² = 1398340003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1398344039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699172049 + 699172050.

It is an arithmetic number, because the mean of its divisors is an integer number (699172050).

Almost surely, 2^1398344099 is an apocalyptic number.

1398344099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398344099 is an equidigital number, since it uses as much as digits as its factorization.

1398344099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 1398344099 is about 37394.4394128325. The cubic root of 1398344099 is about 1118.2477113756.

The spelling of 1398344099 in words is "one billion, three hundred ninety-eight million, three hundred forty-four thousand, ninety-nine".