69433139 has 2 divisors, whose sum is σ = 69433140. Its totient is φ = 69433138.

The previous prime is 69433129. The next prime is 69433153. The reversal of 69433139 is 93133496.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69433139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69433129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34716569 + 34716570.

It is an arithmetic number, because the mean of its divisors is an integer number (34716570).

Almost surely, 2^69433139 is an apocalyptic number.

69433139 is a deficient number, since it is larger than the sum of its proper divisors (1).

69433139 is an equidigital number, since it uses as much as digits as its factorization.

69433139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 38.

The square root of 69433139 is about 8332.6549790568. The cubic root of 69433139 is about 411.0130392123.

It can be divided in two parts, 694 and 33139, that added together give a palindrome (33833).

The spelling of 69433139 in words is "sixty-nine million, four hundred thirty-three thousand, one hundred thirty-nine".