29188139 has 2 divisors, whose sum is σ = 29188140. Its totient is φ = 29188138.

The previous prime is 29188109. The next prime is 29188147. The reversal of 29188139 is 93188192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29188139 - 2⁸ = 29187883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 29188096 and 29188105.

It is not a weakly prime, because it can be changed into another prime (29188109) 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 as a sum of consecutive naturals, namely, 14594069 + 14594070.

It is an arithmetic number, because the mean of its divisors is an integer number (14594070).

Almost surely, 2^29188139 is an apocalyptic number.

29188139 is a deficient number, since it is larger than the sum of its proper divisors (1).

29188139 is an equidigital number, since it uses as much as digits as its factorization.

29188139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 41.

The square root of 29188139 is about 5402.6048347071. The cubic root of 29188139 is about 307.8946447723.

The spelling of 29188139 in words is "twenty-nine million, one hundred eighty-eight thousand, one hundred thirty-nine".