33421433 has 2 divisors, whose sum is σ = 33421434. Its totient is φ = 33421432.

The previous prime is 33421417. The next prime is 33421457. The reversal of 33421433 is 33412433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24730729 + 8690704 = 4973^2 + 2948^2 .

It is a cyclic number.

It is not a de Polignac number, because 33421433 - 2⁴ = 33421417 is a prime.

It is a super-4 number, since 4×33421433⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 33421399 and 33421408.

It is not a weakly prime, because it can be changed into another prime (33421463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16710716 + 16710717.

It is an arithmetic number, because the mean of its divisors is an integer number (16710717).

Almost surely, 2^33421433 is an apocalyptic number.

It is an amenable number.

33421433 is a deficient number, since it is larger than the sum of its proper divisors (1).

33421433 is an equidigital number, since it uses as much as digits as its factorization.

33421433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 23.

The square root of 33421433 is about 5781.1273122117. The cubic root of 33421433 is about 322.1130764213.

Adding to 33421433 its reverse (33412433), we get a palindrome (66833866).

The spelling of 33421433 in words is "thirty-three million, four hundred twenty-one thousand, four hundred thirty-three".