33989386 has 4 divisors (see below), whose sum is σ = 50984082. Its totient is φ = 16994692.

The previous prime is 33989381. The next prime is 33989419. The reversal of 33989386 is 68398933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68398933 = 241 ⋅283813.

It can be written as a sum of positive squares in only one way, i.e., 31013761 + 2975625 = 5569^2 + 1725^2 .

It is a super-3 number, since 3×33989386³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (33989381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497345 + ... + 8497348.

Almost surely, 2^33989386 is an apocalyptic number.

33989386 is a deficient number, since it is larger than the sum of its proper divisors (16994696).

33989386 is a wasteful number, since it uses less digits than its factorization.

33989386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16994695.

The product of its digits is 839808, while the sum is 49.

The square root of 33989386 is about 5830.0416808116. The cubic root of 33989386 is about 323.9274655999.

The spelling of 33989386 in words is "thirty-three million, nine hundred eighty-nine thousand, three hundred eighty-six".