33990949 has 2 divisors, whose sum is σ = 33990950. Its totient is φ = 33990948.

The previous prime is 33990919. The next prime is 33990953. The reversal of 33990949 is 94909933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 14010049 = 4470^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 33990949 - 2⁷ = 33990821 is a prime.

It is a super-2 number, since 2×33990949² = 2310769227841202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 33990899 and 33990908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33990919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16995474 + 16995475.

It is an arithmetic number, because the mean of its divisors is an integer number (16995475).

Almost surely, 2^33990949 is an apocalyptic number.

It is an amenable number.

33990949 is a deficient number, since it is larger than the sum of its proper divisors (1).

33990949 is an equidigital number, since it uses as much as digits as its factorization.

33990949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 33990949 is about 5830.1757263396. The cubic root of 33990949 is about 323.9324307859.

The spelling of 33990949 in words is "thirty-three million, nine hundred ninety thousand, nine hundred forty-nine".