838897967 has 2 divisors, whose sum is σ = 838897968. Its totient is φ = 838897966.

The previous prime is 838897949. The next prime is 838897979. The reversal of 838897967 is 769798838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 838897967 - 2⁶ = 838897903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838897907) 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, 419448983 + 419448984.

It is an arithmetic number, because the mean of its divisors is an integer number (419448984).

Almost surely, 2^838897967 is an apocalyptic number.

838897967 is a deficient number, since it is larger than the sum of its proper divisors (1).

838897967 is an equidigital number, since it uses as much as digits as its factorization.

838897967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 65.

The square root of 838897967 is about 28963.7353771919. The cubic root of 838897967 is about 943.1259921163.

The spelling of 838897967 in words is "eight hundred thirty-eight million, eight hundred ninety-seven thousand, nine hundred sixty-seven".