30359993 has 4 divisors (see below), whose sum is σ = 30450420. Its totient is φ = 30269568.

The previous prime is 30359981. The next prime is 30359999. The reversal of 30359993 is 39995303.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 17197609 = 3628^2 + 4147^2 .

It is a cyclic number.

It is not a de Polignac number, because 30359993 - 2¹⁴ = 30343609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30359993.

It is not an unprimeable number, because it can be changed into a prime (30359999) 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, 44708 + ... + 45381.

It is an arithmetic number, because the mean of its divisors is an integer number (7612605).

Almost surely, 2^30359993 is an apocalyptic number.

It is an amenable number.

30359993 is a deficient number, since it is larger than the sum of its proper divisors (90427).

30359993 is an equidigital number, since it uses as much as digits as its factorization.

30359993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90426.

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

The square root of 30359993 is about 5509.9902903726. The cubic root of 30359993 is about 311.9611809308.

The spelling of 30359993 in words is "thirty million, three hundred fifty-nine thousand, nine hundred ninety-three".