69121469 has 2 divisors, whose sum is σ = 69121470. Its totient is φ = 69121468.

The previous prime is 69121447. The next prime is 69121477. The reversal of 69121469 is 96412196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63409369 + 5712100 = 7963^2 + 2390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69121469 is a prime.

It is a super-2 number, since 2×69121469² = 9555554953435922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69121489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34560734 + 34560735.

It is an arithmetic number, because the mean of its divisors is an integer number (34560735).

Almost surely, 2^69121469 is an apocalyptic number.

It is an amenable number.

69121469 is a deficient number, since it is larger than the sum of its proper divisors (1).

69121469 is an equidigital number, since it uses as much as digits as its factorization.

69121469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 69121469 is about 8313.9322224805. The cubic root of 69121469 is about 410.3971345367.

The spelling of 69121469 in words is "sixty-nine million, one hundred twenty-one thousand, four hundred sixty-nine".