33450409 has 2 divisors, whose sum is σ = 33450410. Its totient is φ = 33450408.

The previous prime is 33450401. The next prime is 33450437. The reversal of 33450409 is 90405433.

It is an a-pointer prime, because the next prime (33450437) can be obtained adding 33450409 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27594009 + 5856400 = 5253^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 33450409 - 2³ = 33450401 is a prime.

It is a super-2 number, since 2×33450409² = 2237859724534562, which contains 22 as substring.

It is equal to p_2057725 and since 33450409 and 2057725 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (33450401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16725204 + 16725205.

It is an arithmetic number, because the mean of its divisors is an integer number (16725205).

Almost surely, 2^33450409 is an apocalyptic number.

It is an amenable number.

33450409 is a deficient number, since it is larger than the sum of its proper divisors (1).

33450409 is an equidigital number, since it uses as much as digits as its factorization.

33450409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 33450409 is about 5783.6328548759. The cubic root of 33450409 is about 322.2061389823.

The spelling of 33450409 in words is "thirty-three million, four hundred fifty thousand, four hundred nine".