29769139 has 4 divisors (see below), whose sum is σ = 29784856. Its totient is φ = 29753424.

The previous prime is 29769133. The next prime is 29769151. The reversal of 29769139 is 93196792.

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 29769139 - 2⁷ = 29769011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29769133) 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, 4554 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (7446214).

Almost surely, 2^29769139 is an apocalyptic number.

29769139 is a deficient number, since it is larger than the sum of its proper divisors (15717).

29769139 is a wasteful number, since it uses less digits than its factorization.

29769139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15716.

The product of its digits is 183708, while the sum is 46.

The square root of 29769139 is about 5456.1102444874. The cubic root of 29769139 is about 309.9241541815.

The spelling of 29769139 in words is "twenty-nine million, seven hundred sixty-nine thousand, one hundred thirty-nine".