40340999 has 2 divisors, whose sum is σ = 40341000. Its totient is φ = 40340998.

The previous prime is 40340987. The next prime is 40341019. The reversal of 40340999 is 99904304.

40340999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40340999 - 2¹⁶ = 40275463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340969) 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 as a sum of consecutive naturals, namely, 20170499 + 20170500.

It is an arithmetic number, because the mean of its divisors is an integer number (20170500).

Almost surely, 2^40340999 is an apocalyptic number.

40340999 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340999 is an equidigital number, since it uses as much as digits as its factorization.

40340999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 40340999 is about 6351.4564471466. The cubic root of 40340999 is about 342.9642742018.

The spelling of 40340999 in words is "forty million, three hundred forty thousand, nine hundred ninety-nine".