69426109 has 2 divisors, whose sum is σ = 69426110. Its totient is φ = 69426108.

The previous prime is 69426083. The next prime is 69426127. The reversal of 69426109 is 90162496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 13505625 = 7478^2 + 3675^2 .

It is a cyclic number.

It is not a de Polignac number, because 69426109 - 2¹³ = 69417917 is a prime.

It is a super-2 number, since 2×69426109² = 9639969221759762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69426179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34713054 + 34713055.

It is an arithmetic number, because the mean of its divisors is an integer number (34713055).

Almost surely, 2^69426109 is an apocalyptic number.

It is an amenable number.

69426109 is a deficient number, since it is larger than the sum of its proper divisors (1).

69426109 is an equidigital number, since it uses as much as digits as its factorization.

69426109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 69426109 is about 8332.2331340404. The cubic root of 69426109 is about 410.9991672619. Note that the first 3 decimals are identical.

The spelling of 69426109 in words is "sixty-nine million, four hundred twenty-six thousand, one hundred nine".