123995897 has 2 divisors, whose sum is σ = 123995898. Its totient is φ = 123995896.

The previous prime is 123995873. The next prime is 123995899. The reversal of 123995897 is 798599321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107827456 + 16168441 = 10384^2 + 4021^2 .

It is a cyclic number.

It is not a de Polignac number, because 123995897 - 2¹² = 123991801 is a prime.

Together with 123995899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123995899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61997948 + 61997949.

It is an arithmetic number, because the mean of its divisors is an integer number (61997949).

Almost surely, 2^123995897 is an apocalyptic number.

It is an amenable number.

123995897 is a deficient number, since it is larger than the sum of its proper divisors (1).

123995897 is an equidigital number, since it uses as much as digits as its factorization.

123995897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 53.

The square root of 123995897 is about 11135.3444939975. The cubic root of 123995897 is about 498.6575951237.

The spelling of 123995897 in words is "one hundred twenty-three million, nine hundred ninety-five thousand, eight hundred ninety-seven".