29213979 has 16 divisors (see below), whose sum is σ = 41747712. Its totient is φ = 18124128.

The previous prime is 29213969. The next prime is 29213981. The reversal of 29213979 is 97931292.

29213979 = 1116² + 1117² + ... + 1138².

It is a happy number.

It is not a de Polignac number, because 29213979 - 2⁷ = 29213851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29213979.

It is not an unprimeable number, because it can be changed into a prime (29213969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3169 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (2609232).

Almost surely, 2^29213979 is an apocalyptic number.

29213979 is a deficient number, since it is larger than the sum of its proper divisors (12533733).

29213979 is a wasteful number, since it uses less digits than its factorization.

29213979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11506.

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

The square root of 29213979 is about 5404.9957446792. The cubic root of 29213979 is about 307.9854767706.

The spelling of 29213979 in words is "twenty-nine million, two hundred thirteen thousand, nine hundred seventy-nine".