838449681 has 8 divisors (see below), whose sum is σ = 1118148480. Its totient is φ = 558858672.

The previous prime is 838449641. The next prime is 838449683. The reversal of 838449681 is 186944838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 838449681 - 2⁷ = 838449553 is a prime.

It is a super-2 number, since 2×838449681² = 1405995735138003522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (838449683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6601 + ... + 41478.

It is an arithmetic number, because the mean of its divisors is an integer number (139768560).

Almost surely, 2^838449681 is an apocalyptic number.

It is an amenable number.

838449681 is a deficient number, since it is larger than the sum of its proper divisors (279698799).

838449681 is a wasteful number, since it uses less digits than its factorization.

838449681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53895.

The product of its digits is 1327104, while the sum is 51.

The square root of 838449681 is about 28955.9955967672. The cubic root of 838449681 is about 942.9579679040.

The spelling of 838449681 in words is "eight hundred thirty-eight million, four hundred forty-nine thousand, six hundred eighty-one".