30149979 has 8 divisors (see below), whose sum is σ = 42315840. Its totient is φ = 19042056.

The previous prime is 30149969. The next prime is 30149989. The reversal of 30149979 is 97994103.

It is an interprime number because it is at equal distance from previous prime (30149969) and next prime (30149989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30149979 - 2⁸ = 30149723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30149979.

It is not an unprimeable number, because it can be changed into a prime (30149969) 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 7 ways as a sum of consecutive naturals, for example, 264417 + ... + 264530.

It is an arithmetic number, because the mean of its divisors is an integer number (5289480).

Almost surely, 2^30149979 is an apocalyptic number.

30149979 is a deficient number, since it is larger than the sum of its proper divisors (12165861).

30149979 is a wasteful number, since it uses less digits than its factorization.

30149979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528969.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 30149979 is about 5490.8996530623. The cubic root of 30149979 is about 311.2401896877.

The spelling of 30149979 in words is "thirty million, one hundred forty-nine thousand, nine hundred seventy-nine".