30942899 has 4 divisors (see below), whose sum is σ = 33323136. Its totient is φ = 28562664.

The previous prime is 30942893. The next prime is 30942911. The reversal of 30942899 is 99824903.

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

It is not a de Polignac number, because 30942899 - 2⁴ = 30942883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30942893) 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, 1190099 + ... + 1190124.

It is an arithmetic number, because the mean of its divisors is an integer number (8330784).

Almost surely, 2^30942899 is an apocalyptic number.

30942899 is a deficient number, since it is larger than the sum of its proper divisors (2380237).

30942899 is a wasteful number, since it uses less digits than its factorization.

30942899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380236.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 30942899 is about 5562.6341781570. The cubic root of 30942899 is about 313.9450692989.

The spelling of 30942899 in words is "thirty million, nine hundred forty-two thousand, eight hundred ninety-nine".