80138897 has 2 divisors, whose sum is σ = 80138898. Its totient is φ = 80138896.

The previous prime is 80138879. The next prime is 80138899. The reversal of 80138897 is 79883108.

Together with previous prime (80138879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80120401 + 18496 = 8951^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 80138897 - 2¹⁰ = 80137873 is a prime.

Together with 80138899, 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 (80138899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40069448 + 40069449.

It is an arithmetic number, because the mean of its divisors is an integer number (40069449).

Almost surely, 2^80138897 is an apocalyptic number.

It is an amenable number.

80138897 is a deficient number, since it is larger than the sum of its proper divisors (1).

80138897 is an equidigital number, since it uses as much as digits as its factorization.

80138897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 80138897 is about 8952.0331210290. The cubic root of 80138897 is about 431.1361642547.

The spelling of 80138897 in words is "eighty million, one hundred thirty-eight thousand, eight hundred ninety-seven".