73748009 has 2 divisors, whose sum is σ = 73748010. Its totient is φ = 73748008.

The previous prime is 73747943. The next prime is 73748047. The reversal of 73748009 is 90084737.

It is an a-pointer prime, because the next prime (73748047) can be obtained adding 73748009 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56550400 + 17197609 = 7520^2 + 4147^2 .

It is an emirp because it is prime and its reverse (90084737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73748009 - 2⁸ = 73747753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73748089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36874004 + 36874005.

It is an arithmetic number, because the mean of its divisors is an integer number (36874005).

Almost surely, 2^73748009 is an apocalyptic number.

It is an amenable number.

73748009 is a deficient number, since it is larger than the sum of its proper divisors (1).

73748009 is an equidigital number, since it uses as much as digits as its factorization.

73748009 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 73748009 is about 8587.6660973748. Note that the first 3 decimals coincide. The cubic root of 73748009 is about 419.3565525233.

The spelling of 73748009 in words is "seventy-three million, seven hundred forty-eight thousand, nine".