40873709 has 2 divisors, whose sum is σ = 40873710. Its totient is φ = 40873708.

The previous prime is 40873699. The next prime is 40873727. The reversal of 40873709 is 90737804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38167684 + 2706025 = 6178^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 40873709 - 2⁸ = 40873453 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 (40873739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20436854 + 20436855.

It is an arithmetic number, because the mean of its divisors is an integer number (20436855).

Almost surely, 2^40873709 is an apocalyptic number.

It is an amenable number.

40873709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40873709 is an equidigital number, since it uses as much as digits as its factorization.

40873709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 40873709 is about 6393.2549612854. The cubic root of 40873709 is about 344.4673120864.

The spelling of 40873709 in words is "forty million, eight hundred seventy-three thousand, seven hundred nine".