33390073 has 2 divisors, whose sum is σ = 33390074. Its totient is φ = 33390072.

The previous prime is 33390037. The next prime is 33390101. The reversal of 33390073 is 37009333.

Together with previous prime (33390037) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (33390101) can be obtained adding 33390073 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30338064 + 3052009 = 5508^2 + 1747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33390073 is a prime.

It is a super-2 number, since 2×33390073² = 2229793949890658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33390173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16695036 + 16695037.

It is an arithmetic number, because the mean of its divisors is an integer number (16695037).

Almost surely, 2^33390073 is an apocalyptic number.

It is an amenable number.

33390073 is a deficient number, since it is larger than the sum of its proper divisors (1).

33390073 is an equidigital number, since it uses as much as digits as its factorization.

33390073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 28.

The square root of 33390073 is about 5778.4144018926. The cubic root of 33390073 is about 322.0122965097.

The spelling of 33390073 in words is "thirty-three million, three hundred ninety thousand, seventy-three".