8400786192089 has 2 divisors, whose sum is σ = 8400786192090. Its totient is φ = 8400786192088.

The previous prime is 8400786192023. The next prime is 8400786192107. The reversal of 8400786192089 is 9802916870048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5836089640000 + 2564696552089 = 2415800^2 + 1601467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8400786192089 is a prime.

It is not a weakly prime, because it can be changed into another prime (8400786195089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200393096044 + 4200393096045.

It is an arithmetic number, because the mean of its divisors is an integer number (4200393096045).

Almost surely, 2^{8400786192089} is an apocalyptic number.

It is an amenable number.

8400786192089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400786192089 is an equidigital number, since it uses as much as digits as its factorization.

8400786192089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 8400786192089 in words is "eight trillion, four hundred billion, seven hundred eighty-six million, one hundred ninety-two thousand, eighty-nine".