73736909 has 2 divisors, whose sum is σ = 73736910. Its totient is φ = 73736908.

The previous prime is 73736881. The next prime is 73736921. The reversal of 73736909 is 90963737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58094884 + 15642025 = 7622^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 73736909 - 2¹⁶ = 73671373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73736909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73732909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36868454 + 36868455.

It is an arithmetic number, because the mean of its divisors is an integer number (36868455).

Almost surely, 2^73736909 is an apocalyptic number.

It is an amenable number.

73736909 is a deficient number, since it is larger than the sum of its proper divisors (1).

73736909 is an equidigital number, since it uses as much as digits as its factorization.

73736909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 73736909 is about 8587.0197973453. The cubic root of 73736909 is about 419.3355119947.

The spelling of 73736909 in words is "seventy-three million, seven hundred thirty-six thousand, nine hundred nine".