69375139 has 2 divisors, whose sum is σ = 69375140. Its totient is φ = 69375138.

The previous prime is 69375101. The next prime is 69375143. The reversal of 69375139 is 93157396.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69375139 - 2¹⁷ = 69244067 is a prime.

It is a super-2 number, since 2×69375139² = 9625819822538642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69375095 and 69375104.

It is not a weakly prime, because it can be changed into another prime (69375169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34687569 + 34687570.

It is an arithmetic number, because the mean of its divisors is an integer number (34687570).

Almost surely, 2^69375139 is an apocalyptic number.

69375139 is a deficient number, since it is larger than the sum of its proper divisors (1).

69375139 is an equidigital number, since it uses as much as digits as its factorization.

69375139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 43.

The square root of 69375139 is about 8329.1739686478. The cubic root of 69375139 is about 410.8985626694.

The spelling of 69375139 in words is "sixty-nine million, three hundred seventy-five thousand, one hundred thirty-nine".