840938 has 12 divisors (see below), whose sum is σ = 1467522. Its totient is φ = 360360.

The previous prime is 840929. The next prime is 840941. The reversal of 840938 is 839048.

It can be written as a sum of positive squares in only one way, i.e., 840889 + 49 = 917^2 + 7^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4193 + ... + 4388.

2⁸⁴⁰⁹³⁸ is an apocalyptic number.

840938 is a deficient number, since it is larger than the sum of its proper divisors (626584).

840938 is a wasteful number, since it uses less digits than its factorization.

840938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8597 (or 8590 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 840938 is about 917.0267171680. The cubic root of 840938 is about 94.3889871525.

The spelling of 840938 in words is "eight hundred forty thousand, nine hundred thirty-eight".