838474879 has 4 divisors (see below), whose sum is σ = 914699880. Its totient is φ = 762249880.

The previous prime is 838474873. The next prime is 838474907. The reversal of 838474879 is 978474838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838474879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838474873) 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 in 3 ways as a sum of consecutive naturals, for example, 38112484 + ... + 38112505.

It is an arithmetic number, because the mean of its divisors is an integer number (228674970).

Almost surely, 2^838474879 is an apocalyptic number.

838474879 is a deficient number, since it is larger than the sum of its proper divisors (76225001).

838474879 is a wasteful number, since it uses less digits than its factorization.

838474879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76225000.

The product of its digits is 10838016, while the sum is 58.

The square root of 838474879 is about 28956.4307020047. The cubic root of 838474879 is about 942.9674140749.

The spelling of 838474879 in words is "eight hundred thirty-eight million, four hundred seventy-four thousand, eight hundred seventy-nine".