838440845 has 8 divisors (see below), whose sum is σ = 1097595360. Its totient is φ = 609775120.

The previous prime is 838440839. The next prime is 838440847. The reversal of 838440845 is 548044838.

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

It is not a de Polignac number, because 838440845 - 2¹² = 838436749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838440796 and 838440805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838440847) 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, 7622135 + ... + 7622244.

It is an arithmetic number, because the mean of its divisors is an integer number (137199420).

Almost surely, 2^838440845 is an apocalyptic number.

It is an amenable number.

838440845 is a deficient number, since it is larger than the sum of its proper divisors (259154515).

838440845 is a wasteful number, since it uses less digits than its factorization.

838440845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15244395.

The product of its (nonzero) digits is 491520, while the sum is 44.

The square root of 838440845 is about 28955.8430200193. The cubic root of 838440845 is about 942.9546554390.

The spelling of 838440845 in words is "eight hundred thirty-eight million, four hundred forty thousand, eight hundred forty-five".