33861939 has 4 divisors (see below), whose sum is σ = 45149256. Its totient is φ = 22574624.

The previous prime is 33861907. The next prime is 33861973. The reversal of 33861939 is 93916833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93916833 = 3 ⋅31305611.

It is a cyclic number.

It is not a de Polignac number, because 33861939 - 2⁵ = 33861907 is a prime.

It is a super-2 number, since 2×33861939² = 2293261825679442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33861939.

It is not an unprimeable number, because it can be changed into a prime (33861979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5643654 + ... + 5643659.

It is an arithmetic number, because the mean of its divisors is an integer number (11287314).

Almost surely, 2^33861939 is an apocalyptic number.

33861939 is a deficient number, since it is larger than the sum of its proper divisors (11287317).

33861939 is a wasteful number, since it uses less digits than its factorization.

33861939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11287316.

The product of its digits is 104976, while the sum is 42.

The square root of 33861939 is about 5819.1012192606. The cubic root of 33861939 is about 323.5220911045.

The spelling of 33861939 in words is "thirty-three million, eight hundred sixty-one thousand, nine hundred thirty-nine".