33989043386 has 4 divisors (see below), whose sum is σ = 50983565082. Its totient is φ = 16994521692.

The previous prime is 33989043329. The next prime is 33989043397. The reversal of 33989043386 is 68334098933.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20382987361 + 13606056025 = 142769^2 + 116645^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497260845 + ... + 8497260848.

Almost surely, 2^33989043386 is an apocalyptic number.

33989043386 is a deficient number, since it is larger than the sum of its proper divisors (16994521696).

33989043386 is a wasteful number, since it uses less digits than its factorization.

33989043386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16994521695.

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 33989043386 in words is "thirty-three billion, nine hundred eighty-nine million, forty-three thousand, three hundred eighty-six".