29139286 has 8 divisors (see below), whose sum is σ = 47682504. Its totient is φ = 13245120.

The previous prime is 29139281. The next prime is 29139289. The reversal of 29139286 is 68293192.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29139281) 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, 662235 + ... + 662278.

It is an arithmetic number, because the mean of its divisors is an integer number (5960313).

Almost surely, 2^29139286 is an apocalyptic number.

29139286 is a deficient number, since it is larger than the sum of its proper divisors (18543218).

29139286 is a wasteful number, since it uses less digits than its factorization.

29139286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324526.

The product of its digits is 46656, while the sum is 40.

The square root of 29139286 is about 5398.0816963066. The cubic root of 29139286 is about 307.7227715703.

The spelling of 29139286 in words is "twenty-nine million, one hundred thirty-nine thousand, two hundred eighty-six".