12572909 has 2 divisors, whose sum is σ = 12572910. Its totient is φ = 12572908.

The previous prime is 12572837. The next prime is 12572969. The reversal of 12572909 is 90927521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8584900 + 3988009 = 2930^2 + 1997^2 .

It is a cyclic number.

It is not a de Polignac number, because 12572909 - 2¹² = 12568813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12572969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6286454 + 6286455.

It is an arithmetic number, because the mean of its divisors is an integer number (6286455).

Almost surely, 2^12572909 is an apocalyptic number.

It is an amenable number.

12572909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12572909 is an equidigital number, since it uses as much as digits as its factorization.

12572909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 12572909 is about 3545.8298041502. The cubic root of 12572909 is about 232.5297853697.

The spelling of 12572909 in words is "twelve million, five hundred seventy-two thousand, nine hundred nine".