12571969 has 2 divisors, whose sum is σ = 12571970. Its totient is φ = 12571968.

The previous prime is 12571943. The next prime is 12571991. The reversal of 12571969 is 96917521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 2930944 = 3105^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 12571969 - 2⁹ = 12571457 is a prime.

It is a super-2 number, since 2×12571969² = 316108809073922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12571919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285984 + 6285985.

It is an arithmetic number, because the mean of its divisors is an integer number (6285985).

Almost surely, 2^12571969 is an apocalyptic number.

It is an amenable number.

12571969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571969 is an equidigital number, since it uses as much as digits as its factorization.

12571969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 40.

The square root of 12571969 is about 3545.6972515995. The cubic root of 12571969 is about 232.5239902790.

The spelling of 12571969 in words is "twelve million, five hundred seventy-one thousand, nine hundred sixty-nine".