838401379 has 2 divisors, whose sum is σ = 838401380. Its totient is φ = 838401378.

The previous prime is 838401341. The next prime is 838401383. The reversal of 838401379 is 973104838.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 838401379 - 2¹³ = 838393187 is a prime.

It is not a weakly prime, because it can be changed into another prime (838401979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419200689 + 419200690.

It is an arithmetic number, because the mean of its divisors is an integer number (419200690).

Almost surely, 2^838401379 is an apocalyptic number.

838401379 is a deficient number, since it is larger than the sum of its proper divisors (1).

838401379 is an equidigital number, since it uses as much as digits as its factorization.

838401379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 838401379 is about 28955.1615260561. The cubic root of 838401379 is about 942.9398600273.

The spelling of 838401379 in words is "eight hundred thirty-eight million, four hundred one thousand, three hundred seventy-nine".