33972943 has 2 divisors, whose sum is σ = 33972944. Its totient is φ = 33972942.

The previous prime is 33972941. The next prime is 33972971. The reversal of 33972943 is 34927933.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33972943 - 2¹ = 33972941 is a prime.

Together with 33972941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 33972896 and 33972905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33972941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16986471 + 16986472.

It is an arithmetic number, because the mean of its divisors is an integer number (16986472).

Almost surely, 2^33972943 is an apocalyptic number.

33972943 is a deficient number, since it is larger than the sum of its proper divisors (1).

33972943 is an equidigital number, since it uses as much as digits as its factorization.

33972943 is an evil number, because the sum of its binary digits is even.

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

The square root of 33972943 is about 5828.6313144683. The cubic root of 33972943 is about 323.8752218549.

The spelling of 33972943 in words is "thirty-three million, nine hundred seventy-two thousand, nine hundred forty-three".