33989967 has 12 divisors (see below), whose sum is σ = 53560104. Its totient is φ = 20599920.

The previous prime is 33989957. The next prime is 33989983. The reversal of 33989967 is 76998933.

It is not a de Polignac number, because 33989967 - 2⁴ = 33989951 is a prime.

It is a super-2 number, since 2×33989967² = 2310635713322178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33989947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171568 + ... + 171765.

It is an arithmetic number, because the mean of its divisors is an integer number (4463342).

Almost surely, 2^33989967 is an apocalyptic number.

33989967 is a deficient number, since it is larger than the sum of its proper divisors (19570137).

33989967 is a wasteful number, since it uses less digits than its factorization.

33989967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343350 (or 343347 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 33989967 is about 5830.0915087158. The cubic root of 33989967 is about 323.9293112819.

The spelling of 33989967 in words is "thirty-three million, nine hundred eighty-nine thousand, nine hundred sixty-seven".