40843811 has 2 divisors, whose sum is σ = 40843812. Its totient is φ = 40843810.

The previous prime is 40843807. The next prime is 40843849. The reversal of 40843811 is 11834804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40843811 - 2² = 40843807 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40842811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20421905 + 20421906.

It is an arithmetic number, because the mean of its divisors is an integer number (20421906).

Almost surely, 2^40843811 is an apocalyptic number.

40843811 is a deficient number, since it is larger than the sum of its proper divisors (1).

40843811 is an equidigital number, since it uses as much as digits as its factorization.

40843811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 40843811 is about 6390.9162879825. The cubic root of 40843811 is about 344.3833021276.

The spelling of 40843811 in words is "forty million, eight hundred forty-three thousand, eight hundred eleven".