139429267 has 2 divisors, whose sum is σ = 139429268. Its totient is φ = 139429266.

The previous prime is 139429261. The next prime is 139429271. The reversal of 139429267 is 762924931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139429267 - 2³ = 139429259 is a prime.

It is not a weakly prime, because it can be changed into another prime (139429261) 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, 69714633 + 69714634.

It is an arithmetic number, because the mean of its divisors is an integer number (69714634).

Almost surely, 2^139429267 is an apocalyptic number.

139429267 is a deficient number, since it is larger than the sum of its proper divisors (1).

139429267 is an equidigital number, since it uses as much as digits as its factorization.

139429267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 139429267 is about 11808.0170646896. The cubic root of 139429267 is about 518.5428473317.

The spelling of 139429267 in words is "one hundred thirty-nine million, four hundred twenty-nine thousand, two hundred sixty-seven".