840961711 has 4 divisors (see below), whose sum is σ = 841082512. Its totient is φ = 840840912.

The previous prime is 840961651. The next prime is 840961747. The reversal of 840961711 is 117169048.

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 840961711 - 2¹¹ = 840959663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840961411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49275 + ... + 64108.

It is an arithmetic number, because the mean of its divisors is an integer number (210270628).

Almost surely, 2^840961711 is an apocalyptic number.

840961711 is a deficient number, since it is larger than the sum of its proper divisors (120801).

840961711 is a wasteful number, since it uses less digits than its factorization.

840961711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120800.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 840961711 is about 28999.3398373135. The cubic root of 840961711 is about 943.8987427151.

The spelling of 840961711 in words is "eight hundred forty million, nine hundred sixty-one thousand, seven hundred eleven".