30099861 has 12 divisors (see below), whose sum is σ = 47430240. Its totient is φ = 18242280.

The previous prime is 30099851. The next prime is 30099917. The reversal of 30099861 is 16899003.

It is not a de Polignac number, because 30099861 - 2¹⁹ = 29575573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30099841) 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 11 ways as a sum of consecutive naturals, for example, 151921 + ... + 152118.

It is an arithmetic number, because the mean of its divisors is an integer number (3952520).

Almost surely, 2^30099861 is an apocalyptic number.

It is an amenable number.

30099861 is a deficient number, since it is larger than the sum of its proper divisors (17330379).

30099861 is a wasteful number, since it uses less digits than its factorization.

30099861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304056 (or 304053 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 30099861 is about 5486.3340219130. The cubic root of 30099861 is about 311.0676369194.

The spelling of 30099861 in words is "thirty million, ninety-nine thousand, eight hundred sixty-one".