29942891 has 8 divisors (see below), whose sum is σ = 32886000. Its totient is φ = 27036640.

The previous prime is 29942881. The next prime is 29942897. The reversal of 29942891 is 19824992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29942891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29942897) 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, 7496 + ... + 10773.

It is an arithmetic number, because the mean of its divisors is an integer number (4110750).

Almost surely, 2^29942891 is an apocalyptic number.

29942891 is a deficient number, since it is larger than the sum of its proper divisors (2943109).

29942891 is a wasteful number, since it uses less digits than its factorization.

29942891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18429.

The product of its digits is 93312, while the sum is 44.

The square root of 29942891 is about 5472.0097770380. The cubic root of 29942891 is about 310.5259576388.

It can be divided in two parts, 2994 and 2891, that added together give a palindrome (5885).

The spelling of 29942891 in words is "twenty-nine million, nine hundred forty-two thousand, eight hundred ninety-one".