838404097 has 2 divisors, whose sum is σ = 838404098. Its totient is φ = 838404096.

The previous prime is 838404059. The next prime is 838404109. The reversal of 838404097 is 790404838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439363521 + 399040576 = 20961^2 + 19976^2 .

It is a cyclic number.

It is not a de Polignac number, because 838404097 - 2²⁷ = 704186369 is a prime.

It is not a weakly prime, because it can be changed into another prime (838414097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419202048 + 419202049.

It is an arithmetic number, because the mean of its divisors is an integer number (419202049).

Almost surely, 2^838404097 is an apocalyptic number.

It is an amenable number.

838404097 is a deficient number, since it is larger than the sum of its proper divisors (1).

838404097 is an equidigital number, since it uses as much as digits as its factorization.

838404097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 838404097 is about 28955.2084606552. The cubic root of 838404097 is about 942.9408789934.

The spelling of 838404097 in words is "eight hundred thirty-eight million, four hundred four thousand, ninety-seven".