29929691 has 4 divisors (see below), whose sum is σ = 32650584. Its totient is φ = 27208800.

The previous prime is 29929687. The next prime is 29929699. The reversal of 29929691 is 19692992.

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

It is a cyclic number.

It is not a de Polignac number, because 29929691 - 2² = 29929687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29929699) 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 3 ways as a sum of consecutive naturals, for example, 1360430 + ... + 1360451.

It is an arithmetic number, because the mean of its divisors is an integer number (8162646).

Almost surely, 2^29929691 is an apocalyptic number.

29929691 is a deficient number, since it is larger than the sum of its proper divisors (2720893).

29929691 is a wasteful number, since it uses less digits than its factorization.

29929691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720892.

The product of its digits is 157464, while the sum is 47.

The square root of 29929691 is about 5470.8035058847. The cubic root of 29929691 is about 310.4803202607.

The spelling of 29929691 in words is "twenty-nine million, nine hundred twenty-nine thousand, six hundred ninety-one".