29026139 has 4 divisors (see below), whose sum is σ = 29573856. Its totient is φ = 28478424.

The previous prime is 29026117. The next prime is 29026141. The reversal of 29026139 is 93162092.

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 29026139 - 2²⁴ = 12248923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29026159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273779 + ... + 273884.

It is an arithmetic number, because the mean of its divisors is an integer number (7393464).

Almost surely, 2^29026139 is an apocalyptic number.

29026139 is a deficient number, since it is larger than the sum of its proper divisors (547717).

29026139 is an equidigital number, since it uses as much as digits as its factorization.

29026139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547716.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 29026139 is about 5387.5912057245. The cubic root of 29026139 is about 307.3239620782.

The spelling of 29026139 in words is "twenty-nine million, twenty-six thousand, one hundred thirty-nine".