40103309 has 2 divisors, whose sum is σ = 40103310. Its totient is φ = 40103308.

The previous prime is 40103299. The next prime is 40103321. The reversal of 40103309 is 90330104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27071209 + 13032100 = 5203^2 + 3610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40103309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40103009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051654 + 20051655.

It is an arithmetic number, because the mean of its divisors is an integer number (20051655).

Almost surely, 2^40103309 is an apocalyptic number.

It is an amenable number.

40103309 is a deficient number, since it is larger than the sum of its proper divisors (1).

40103309 is an equidigital number, since it uses as much as digits as its factorization.

40103309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 40103309 is about 6332.7173472373. The cubic root of 40103309 is about 342.2893627326.

The spelling of 40103309 in words is "forty million, one hundred three thousand, three hundred nine".