30939449 has 8 divisors (see below), whose sum is σ = 31492032. Its totient is φ = 30391920.

The previous prime is 30939421. The next prime is 30939451. The reversal of 30939449 is 94493903.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30939449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30939409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12347 + ... + 14639.

It is an arithmetic number, because the mean of its divisors is an integer number (3936504).

Almost surely, 2^30939449 is an apocalyptic number.

It is an amenable number.

30939449 is a deficient number, since it is larger than the sum of its proper divisors (552583).

30939449 is a wasteful number, since it uses less digits than its factorization.

30939449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 30939449 is about 5562.3240646334. The cubic root of 30939449 is about 313.9334010241.

The spelling of 30939449 in words is "thirty million, nine hundred thirty-nine thousand, four hundred forty-nine".