29979213 has 32 divisors (see below), whose sum is σ = 45906432. Its totient is φ = 17236800.

The previous prime is 29979203. The next prime is 29979221. The reversal of 29979213 is 31297992.

It is a happy number.

It is not a de Polignac number, because 29979213 - 2⁴ = 29979197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29979203) 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, 52218 + ... + 52788.

It is an arithmetic number, because the mean of its divisors is an integer number (1434576).

Almost surely, 2^29979213 is an apocalyptic number.

It is an amenable number.

29979213 is a deficient number, since it is larger than the sum of its proper divisors (15927219).

29979213 is a wasteful number, since it uses less digits than its factorization.

29979213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

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

The square root of 29979213 is about 5475.3276614281. The cubic root of 29979213 is about 310.6514672998.

The spelling of 29979213 in words is "twenty-nine million, nine hundred seventy-nine thousand, two hundred thirteen".