2139119897 has 2 divisors, whose sum is σ = 2139119898. Its totient is φ = 2139119896.

The previous prime is 2139119891. The next prime is 2139119903. The reversal of 2139119897 is 7989119312.

It is a balanced prime because it is at equal distance from previous prime (2139119891) and next prime (2139119903).

It can be written as a sum of positive squares in only one way, i.e., 1535385856 + 603734041 = 39184^2 + 24571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139119897 - 2⁴ = 2139119881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2139119891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069559948 + 1069559949.

It is an arithmetic number, because the mean of its divisors is an integer number (1069559949).

Almost surely, 2^2139119897 is an apocalyptic number.

It is an amenable number.

2139119897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139119897 is an equidigital number, since it uses as much as digits as its factorization.

2139119897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 50.

The square root of 2139119897 is about 46250.6205039457. The cubic root of 2139119897 is about 1288.4820590625.

The spelling of 2139119897 in words is "two billion, one hundred thirty-nine million, one hundred nineteen thousand, eight hundred ninety-seven".