116278397 has 2 divisors, whose sum is σ = 116278398. Its totient is φ = 116278396.

The previous prime is 116278391. The next prime is 116278471. The reversal of 116278397 is 793872611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 53377636 = 7931^2 + 7306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116278397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116278391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58139198 + 58139199.

It is an arithmetic number, because the mean of its divisors is an integer number (58139199).

Almost surely, 2^116278397 is an apocalyptic number.

It is an amenable number.

116278397 is a deficient number, since it is larger than the sum of its proper divisors (1).

116278397 is an equidigital number, since it uses as much as digits as its factorization.

116278397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 116278397 is about 10783.2461253558. The cubic root of 116278397 is about 488.0897401142.

The spelling of 116278397 in words is "one hundred sixteen million, two hundred seventy-eight thousand, three hundred ninety-seven".