30029979 has 32 divisors (see below), whose sum is σ = 47693824. Its totient is φ = 16446240.

The previous prime is 30029969. The next prime is 30030023. The reversal of 30029979 is 97992003.

It is not a de Polignac number, because 30029979 - 2⁴ = 30029963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30029969) 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 31 ways as a sum of consecutive naturals, for example, 105972 + ... + 106254.

It is an arithmetic number, because the mean of its divisors is an integer number (1490432).

Almost surely, 2^30029979 is an apocalyptic number.

30029979 is a deficient number, since it is larger than the sum of its proper divisors (17663845).

30029979 is a wasteful number, since it uses less digits than its factorization.

30029979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 30029979 is about 5479.9615874566. The cubic root of 30029979 is about 310.8267180528.

The spelling of 30029979 in words is "thirty million, twenty-nine thousand, nine hundred seventy-nine".