839706607897 has 2 divisors, whose sum is σ = 839706607898. Its totient is φ = 839706607896.

The previous prime is 839706607877. The next prime is 839706607979. The reversal of 839706607897 is 798706607938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 838522972681 + 1183635216 = 915709^2 + 34404^2 .

It is a cyclic number.

It is not a de Polignac number, because 839706607897 - 2¹⁵ = 839706575129 is a prime.

It is a super-2 number, since 2×839706607897² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (839706607807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419853303948 + 419853303949.

It is an arithmetic number, because the mean of its divisors is an integer number (419853303949).

Almost surely, 2^839706607897 is an apocalyptic number.

It is an amenable number.

839706607897 is a deficient number, since it is larger than the sum of its proper divisors (1).

839706607897 is an equidigital number, since it uses as much as digits as its factorization.

839706607897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192036096, while the sum is 70.

The spelling of 839706607897 in words is "eight hundred thirty-nine billion, seven hundred six million, six hundred seven thousand, eight hundred ninety-seven".