29023139 has 2 divisors, whose sum is σ = 29023140. Its totient is φ = 29023138.

The previous prime is 29023123. The next prime is 29023153. The reversal of 29023139 is 93132092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29023139 - 2⁴ = 29023123 is a prime.

It is not a weakly prime, because it can be changed into another prime (29023439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14511569 + 14511570.

It is an arithmetic number, because the mean of its divisors is an integer number (14511570).

Almost surely, 2^29023139 is an apocalyptic number.

29023139 is a deficient number, since it is larger than the sum of its proper divisors (1).

29023139 is an equidigital number, since it uses as much as digits as its factorization.

29023139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 29023139 is about 5387.3127809697. The cubic root of 29023139 is about 307.3133738787.

The spelling of 29023139 in words is "twenty-nine million, twenty-three thousand, one hundred thirty-nine".