12398137 has 2 divisors, whose sum is σ = 12398138. Its totient is φ = 12398136.

The previous prime is 12398119. The next prime is 12398159. The reversal of 12398137 is 73189321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9339136 + 3059001 = 3056^2 + 1749^2 .

It is a cyclic number.

It is not a de Polignac number, because 12398137 - 2¹⁵ = 12365369 is a prime.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (12398537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199068 + 6199069.

It is an arithmetic number, because the mean of its divisors is an integer number (6199069).

Almost surely, 2^12398137 is an apocalyptic number.

It is an amenable number.

12398137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12398137 is an equidigital number, since it uses as much as digits as its factorization.

12398137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 12398137 is about 3521.0988341709. The cubic root of 12398137 is about 231.4473132607.

The spelling of 12398137 in words is "twelve million, three hundred ninety-eight thousand, one hundred thirty-seven".