33906949 has 2 divisors, whose sum is σ = 33906950. Its totient is φ = 33906948.

The previous prime is 33906941. The next prime is 33906997. The reversal of 33906949 is 94960933.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33558849 + 348100 = 5793^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 33906949 - 2³ = 33906941 is a prime.

It is a super-2 number, since 2×33906949² = 2299362380977202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33906941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16953474 + 16953475.

It is an arithmetic number, because the mean of its divisors is an integer number (16953475).

Almost surely, 2^33906949 is an apocalyptic number.

It is an amenable number.

33906949 is a deficient number, since it is larger than the sum of its proper divisors (1).

33906949 is an equidigital number, since it uses as much as digits as its factorization.

33906949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 33906949 is about 5822.9673706797. The cubic root of 33906949 is about 323.6653717572.

The spelling of 33906949 in words is "thirty-three million, nine hundred six thousand, nine hundred forty-nine".