69471229 has 2 divisors, whose sum is σ = 69471230. Its totient is φ = 69471228.

The previous prime is 69471223. The next prime is 69471251. The reversal of 69471229 is 92217496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63840100 + 5631129 = 7990^2 + 2373^2 .

It is a cyclic number.

It is not a de Polignac number, because 69471229 - 2⁹ = 69470717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69471191 and 69471200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69471223) 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, 34735614 + 34735615.

It is an arithmetic number, because the mean of its divisors is an integer number (34735615).

Almost surely, 2^69471229 is an apocalyptic number.

It is an amenable number.

69471229 is a deficient number, since it is larger than the sum of its proper divisors (1).

69471229 is an equidigital number, since it uses as much as digits as its factorization.

69471229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 69471229 is about 8334.9402517355. The cubic root of 69471229 is about 411.0881840446.

The spelling of 69471229 in words is "sixty-nine million, four hundred seventy-one thousand, two hundred twenty-nine".