840955 has 8 divisors (see below), whose sum is σ = 1022400. Its totient is φ = 663936.

The previous prime is 840943. The next prime is 840967. The reversal of 840955 is 559048.

It is an interprime number because it is at equal distance from previous prime (840943) and next prime (840967).

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

It is a cyclic number.

It is not a de Polignac number, because 840955 - 2⁵ = 840923 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (127800).

2⁸⁴⁰⁹⁵⁵ is an apocalyptic number.

840955 is a deficient number, since it is larger than the sum of its proper divisors (181445).

840955 is a wasteful number, since it uses less digits than its factorization.

840955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 840955 is about 917.0359862077. The cubic root of 840955 is about 94.3896231891.

It can be divided in two parts, 84095 and 5, that added together give a square (84100 = 290²).

The spelling of 840955 in words is "eight hundred forty thousand, nine hundred fifty-five".