840995 has 16 divisors (see below), whose sum is σ = 1078272. Its totient is φ = 628320.

The previous prime is 840991. The next prime is 841003. The reversal of 840995 is 599048.

840995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840995 - 2² = 840991 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8114 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (67392).

2⁸⁴⁰⁹⁹⁵ is an apocalyptic number.

840995 is a deficient number, since it is larger than the sum of its proper divisors (237277).

840995 is a wasteful number, since it uses less digits than its factorization.

840995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 840995 is about 917.0577953433. The cubic root of 840995 is about 94.3911197119.

The spelling of 840995 in words is "eight hundred forty thousand, nine hundred ninety-five".