30849943 has 4 divisors (see below), whose sum is σ = 31133080. Its totient is φ = 30566808.

The previous prime is 30849941. The next prime is 30849953. The reversal of 30849943 is 34994803.

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

It is a cyclic number.

It is not a de Polignac number, because 30849943 - 2¹ = 30849941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30849896 and 30849905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30849941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141405 + ... + 141622.

It is an arithmetic number, because the mean of its divisors is an integer number (7783270).

Almost surely, 2^30849943 is an apocalyptic number.

30849943 is a deficient number, since it is larger than the sum of its proper divisors (283137).

30849943 is a wasteful number, since it uses less digits than its factorization.

30849943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283136.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 30849943 is about 5554.2724996168. The cubic root of 30849943 is about 313.6303783599.

The spelling of 30849943 in words is "thirty million, eight hundred forty-nine thousand, nine hundred forty-three".