30485993 has 4 divisors (see below), whose sum is σ = 30533760. Its totient is φ = 30438228.

The previous prime is 30485977. The next prime is 30486023. The reversal of 30485993 is 39958403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30485993 - 2⁴ = 30485977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30485993.

It is not an unprimeable number, because it can be changed into a prime (30485933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22913 + ... + 24206.

It is an arithmetic number, because the mean of its divisors is an integer number (7633440).

Almost surely, 2^30485993 is an apocalyptic number.

It is an amenable number.

30485993 is a deficient number, since it is larger than the sum of its proper divisors (47767).

30485993 is an equidigital number, since it uses as much as digits as its factorization.

30485993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47766.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 30485993 is about 5521.4122287690. The cubic root of 30485993 is about 312.3921522246.

The spelling of 30485993 in words is "thirty million, four hundred eighty-five thousand, nine hundred ninety-three".