69331139 has 2 divisors, whose sum is σ = 69331140. Its totient is φ = 69331138.

The previous prime is 69331099. The next prime is 69331183. The reversal of 69331139 is 93113396.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69331139 - 2⁸ = 69330883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69331099 and 69331108.

It is not a weakly prime, because it can be changed into another prime (69381139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34665569 + 34665570.

It is an arithmetic number, because the mean of its divisors is an integer number (34665570).

Almost surely, 2^69331139 is an apocalyptic number.

69331139 is a deficient number, since it is larger than the sum of its proper divisors (1).

69331139 is an equidigital number, since it uses as much as digits as its factorization.

69331139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 35.

The square root of 69331139 is about 8326.5322313674. The cubic root of 69331139 is about 410.8116758270.

The spelling of 69331139 in words is "sixty-nine million, three hundred thirty-one thousand, one hundred thirty-nine".