838401345 has 24 divisors (see below), whose sum is σ = 1453949952. Its totient is φ = 446925600.

The previous prime is 838401341. The next prime is 838401379. The reversal of 838401345 is 543104838.

It is not a de Polignac number, because 838401345 - 2² = 838401341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (838401341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130560 + ... + 136830.

It is an arithmetic number, because the mean of its divisors is an integer number (60581248).

Almost surely, 2^838401345 is an apocalyptic number.

It is an amenable number.

838401345 is a deficient number, since it is larger than the sum of its proper divisors (615548607).

838401345 is a wasteful number, since it uses less digits than its factorization.

838401345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9253 (or 9250 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 838401345 is about 28955.1609389414. The cubic root of 838401345 is about 942.9398472808.

The spelling of 838401345 in words is "eight hundred thirty-eight million, four hundred one thousand, three hundred forty-five".