30196939 has 4 divisors (see below), whose sum is σ = 30622320. Its totient is φ = 29771560.

The previous prime is 30196937. The next prime is 30196963. The reversal of 30196939 is 93969103.

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

It is a cyclic number.

It is not a de Polignac number, because 30196939 - 2¹ = 30196937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30196937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212584 + ... + 212725.

It is an arithmetic number, because the mean of its divisors is an integer number (7655580).

Almost surely, 2^30196939 is an apocalyptic number.

30196939 is a deficient number, since it is larger than the sum of its proper divisors (425381).

30196939 is an equidigital number, since it uses as much as digits as its factorization.

30196939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425380.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 30196939 is about 5495.1741555660. The cubic root of 30196939 is about 311.4016962412.

The spelling of 30196939 in words is "thirty million, one hundred ninety-six thousand, nine hundred thirty-nine".