29949879 has 4 divisors (see below), whose sum is σ = 39933176. Its totient is φ = 19966584.

The previous prime is 29949877. The next prime is 29949883. The reversal of 29949879 is 97894992.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29949879 - 2¹ = 29949877 is a prime.

It is a super-2 number, since 2×29949879² = 1793990504229282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29949877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4991644 + ... + 4991649.

It is an arithmetic number, because the mean of its divisors is an integer number (9983294).

Almost surely, 2^29949879 is an apocalyptic number.

29949879 is a deficient number, since it is larger than the sum of its proper divisors (9983297).

29949879 is an equidigital number, since it uses as much as digits as its factorization.

29949879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983296.

The product of its digits is 2939328, while the sum is 57.

The square root of 29949879 is about 5472.6482620391. The cubic root of 29949879 is about 310.5501123606.

The spelling of 29949879 in words is "twenty-nine million, nine hundred forty-nine thousand, eight hundred seventy-nine".