33994399 has 2 divisors, whose sum is σ = 33994400. Its totient is φ = 33994398.

The previous prime is 33994361. The next prime is 33994403. The reversal of 33994399 is 99349933.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33994399 - 2¹³ = 33986207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33994309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16997199 + 16997200.

It is an arithmetic number, because the mean of its divisors is an integer number (16997200).

Almost surely, 2^33994399 is an apocalyptic number.

33994399 is a deficient number, since it is larger than the sum of its proper divisors (1).

33994399 is an equidigital number, since it uses as much as digits as its factorization.

33994399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 708588, while the sum is 49.

The square root of 33994399 is about 5830.4715932761. The cubic root of 33994399 is about 323.9433898707.

The spelling of 33994399 in words is "thirty-three million, nine hundred ninety-four thousand, three hundred ninety-nine".