30539993 has 8 divisors (see below), whose sum is σ = 33881760. Its totient is φ = 27292480.

The previous prime is 30539983. The next prime is 30540017. The reversal of 30539993 is 39993503.

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

It is a cyclic number.

It is not a de Polignac number, because 30539993 - 2⁸ = 30539737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30539993.

It is not an unprimeable number, because it can be changed into a prime (30539953) 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, 22880 + ... + 24177.

It is an arithmetic number, because the mean of its divisors is an integer number (4235220).

Almost surely, 2^30539993 is an apocalyptic number.

It is an amenable number.

30539993 is a deficient number, since it is larger than the sum of its proper divisors (3341767).

30539993 is a wasteful number, since it uses less digits than its factorization.

30539993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47127.

The product of its (nonzero) digits is 98415, while the sum is 41.

The square root of 30539993 is about 5526.3001185241. The cubic root of 30539993 is about 312.5764907158.

The spelling of 30539993 in words is "thirty million, five hundred thirty-nine thousand, nine hundred ninety-three".