840963941 has 2 divisors, whose sum is σ = 840963942. Its totient is φ = 840963940.

The previous prime is 840963931. The next prime is 840963961. The reversal of 840963941 is 149369048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780978916 + 59985025 = 27946^2 + 7745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840963941 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 840963892 and 840963901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840963931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420481970 + 420481971.

It is an arithmetic number, because the mean of its divisors is an integer number (420481971).

Almost surely, 2^840963941 is an apocalyptic number.

It is an amenable number.

840963941 is a deficient number, since it is larger than the sum of its proper divisors (1).

840963941 is an equidigital number, since it uses as much as digits as its factorization.

840963941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 840963941 is about 28999.3782864392. The cubic root of 840963941 is about 943.8995770346.

The spelling of 840963941 in words is "eight hundred forty million, nine hundred sixty-three thousand, nine hundred forty-one".