841040691 has 4 divisors (see below), whose sum is σ = 1121387592. Its totient is φ = 560693792.

The previous prime is 841040663. The next prime is 841040699. The reversal of 841040691 is 196040148.

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 841040691 - 2⁵ = 841040659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (841040699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140173446 + ... + 140173451.

It is an arithmetic number, because the mean of its divisors is an integer number (280346898).

Almost surely, 2^841040691 is an apocalyptic number.

841040691 is a deficient number, since it is larger than the sum of its proper divisors (280346901).

841040691 is a wasteful number, since it uses less digits than its factorization.

841040691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280346900.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 841040691 is about 29000.7015604795. The cubic root of 841040691 is about 943.9282909446.

The spelling of 841040691 in words is "eight hundred forty-one million, forty thousand, six hundred ninety-one".