30440933 has 2 divisors, whose sum is σ = 30440934. Its totient is φ = 30440932.

The previous prime is 30440881. The next prime is 30440939. The reversal of 30440933 is 33904403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29953729 + 487204 = 5473^2 + 698^2 .

It is a cyclic number.

It is not a de Polignac number, because 30440933 - 2¹² = 30436837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30440939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15220466 + 15220467.

It is an arithmetic number, because the mean of its divisors is an integer number (15220467).

Almost surely, 2^30440933 is an apocalyptic number.

It is an amenable number.

30440933 is a deficient number, since it is larger than the sum of its proper divisors (1).

30440933 is an equidigital number, since it uses as much as digits as its factorization.

30440933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 30440933 is about 5517.3302420645. The cubic root of 30440933 is about 312.2381653176.

The spelling of 30440933 in words is "thirty million, four hundred forty thousand, nine hundred thirty-three".