838945 has 8 divisors (see below), whose sum is σ = 1059840. Its totient is φ = 635760.

The previous prime is 838939. The next prime is 838949. The reversal of 838945 is 549838.

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

It is not a de Polignac number, because 838945 - 2⁵ = 838913 is a prime.

It is an alternating number because its digits alternate between even and odd.

838945 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (838949) 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, 4321 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (132480).

2⁸³⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

838945 is a deficient number, since it is larger than the sum of its proper divisors (220895).

838945 is a wasteful number, since it uses less digits than its factorization.

838945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855.

The product of its digits is 34560, while the sum is 37.

The square root of 838945 is about 915.9394084763. The cubic root of 838945 is about 94.3143617309.

The spelling of 838945 in words is "eight hundred thirty-eight thousand, nine hundred forty-five".