1398117599 has 2 divisors, whose sum is σ = 1398117600. Its totient is φ = 1398117598.

The previous prime is 1398117559. The next prime is 1398117613. The reversal of 1398117599 is 9957118931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398117599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1398117599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398117509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699058799 + 699058800.

It is an arithmetic number, because the mean of its divisors is an integer number (699058800).

Almost surely, 2^1398117599 is an apocalyptic number.

1398117599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398117599 is an equidigital number, since it uses as much as digits as its factorization.

1398117599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 53.

The square root of 1398117599 is about 37391.4107650407. The cubic root of 1398117599 is about 1118.1873312008.

The spelling of 1398117599 in words is "one billion, three hundred ninety-eight million, one hundred seventeen thousand, five hundred ninety-nine".