838987 has 4 divisors (see below), whose sum is σ = 846936. Its totient is φ = 831040.

The previous prime is 838969. The next prime is 838991. The reversal of 838987 is 789838.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 838987 - 2¹¹ = 836939 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3814 + ... + 4027.

It is an arithmetic number, because the mean of its divisors is an integer number (211734).

2⁸³⁸⁹⁸⁷ is an apocalyptic number.

838987 is a deficient number, since it is larger than the sum of its proper divisors (7949).

838987 is a wasteful number, since it uses less digits than its factorization.

838987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7948.

The product of its digits is 96768, while the sum is 43.

The square root of 838987 is about 915.9623354702. The cubic root of 838987 is about 94.3159355874.

The spelling of 838987 in words is "eight hundred thirty-eight thousand, nine hundred eighty-seven".