69885139 has 2 divisors, whose sum is σ = 69885140. Its totient is φ = 69885138.

The previous prime is 69885133. The next prime is 69885223. The reversal of 69885139 is 93158896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69885139 - 2³ = 69885131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69885092 and 69885101.

It is not a weakly prime, because it can be changed into another prime (69885131) 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, 34942569 + 34942570.

It is an arithmetic number, because the mean of its divisors is an integer number (34942570).

Almost surely, 2^69885139 is an apocalyptic number.

69885139 is a deficient number, since it is larger than the sum of its proper divisors (1).

69885139 is an equidigital number, since it uses as much as digits as its factorization.

69885139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 69885139 is about 8359.7331895223. The cubic root of 69885139 is about 411.9029899318.

The spelling of 69885139 in words is "sixty-nine million, eight hundred eighty-five thousand, one hundred thirty-nine".