838843749077 has 2 divisors, whose sum is σ = 838843749078. Its totient is φ = 838843749076.

The previous prime is 838843749043. The next prime is 838843749113. The reversal of 838843749077 is 770947348838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479813894596 + 359029854481 = 692686^2 + 599191^2 .

It is a cyclic number.

It is not a de Polignac number, because 838843749077 - 2¹⁰ = 838843748053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838843748998 and 838843749016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838843749977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419421874538 + 419421874539.

It is an arithmetic number, because the mean of its divisors is an integer number (419421874539).

Almost surely, 2^838843749077 is an apocalyptic number.

It is an amenable number.

838843749077 is a deficient number, since it is larger than the sum of its proper divisors (1).

838843749077 is an equidigital number, since it uses as much as digits as its factorization.

838843749077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 227598336, while the sum is 68.

The spelling of 838843749077 in words is "eight hundred thirty-eight billion, eight hundred forty-three million, seven hundred forty-nine thousand, seventy-seven".