33972439 has 4 divisors (see below), whose sum is σ = 34148656. Its totient is φ = 33796224.

The previous prime is 33972413. The next prime is 33972469. The reversal of 33972439 is 93427933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93427933 = 109 ⋅857137.

It is a cyclic number.

It is not a de Polignac number, because 33972439 - 2²⁵ = 418007 is a prime.

It is a super-2 number, since 2×33972439² = 2308253223217442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33972469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87819 + ... + 88204.

It is an arithmetic number, because the mean of its divisors is an integer number (8537164).

Almost surely, 2^33972439 is an apocalyptic number.

33972439 is a deficient number, since it is larger than the sum of its proper divisors (176217).

33972439 is a wasteful number, since it uses less digits than its factorization.

33972439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176216.

The product of its digits is 122472, while the sum is 40.

The square root of 33972439 is about 5828.5880794580. The cubic root of 33972439 is about 323.8736202478.

The spelling of 33972439 in words is "thirty-three million, nine hundred seventy-two thousand, four hundred thirty-nine".