840092091 has 16 divisors (see below), whose sum is σ = 1166901120. Its totient is φ = 537135680.

The previous prime is 840092081. The next prime is 840092101. The reversal of 840092091 is 190290048.

840092091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (840092081) and next prime (840092101).

It is a cyclic number.

It is not a de Polignac number, because 840092091 - 2⁷ = 840091963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840092041) 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, 50625 + ... + 65138.

It is an arithmetic number, because the mean of its divisors is an integer number (72931320).

Almost surely, 2^840092091 is an apocalyptic number.

840092091 is a deficient number, since it is larger than the sum of its proper divisors (326809029).

840092091 is a wasteful number, since it uses less digits than its factorization.

840092091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115866.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 840092091 is about 28984.3421695232. The cubic root of 840092091 is about 943.5732755300.

The spelling of 840092091 in words is "eight hundred forty million, ninety-two thousand, ninety-one".