33890849 has 6 divisors (see below), whose sum is σ = 34105890. Its totient is φ = 33677120.

The previous prime is 33890833. The next prime is 33890861. The reversal of 33890849 is 94809833.

It can be written as a sum of positive squares in only one way, i.e., 19298449 + 14592400 = 4393^2 + 3820^2 .

It is not a de Polignac number, because 33890849 - 2⁴ = 33890833 is a prime.

It is a super-2 number, since 2×33890849² = 2297179291881602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33890819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36017 + ... + 36945.

It is an arithmetic number, because the mean of its divisors is an integer number (5684315).

Almost surely, 2^33890849 is an apocalyptic number.

It is an amenable number.

33890849 is a deficient number, since it is larger than the sum of its proper divisors (215041).

33890849 is an frugal number, since it uses more digits than its factorization.

33890849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 33890849 is about 5821.5847498770. The cubic root of 33890849 is about 323.6141350870.

The spelling of 33890849 in words is "thirty-three million, eight hundred ninety thousand, eight hundred forty-nine".