12290869 has 4 divisors (see below), whose sum is σ = 12316000. Its totient is φ = 12265740.

The previous prime is 12290851. The next prime is 12290893. The reversal of 12290869 is 96809221.

12290869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96809221 = 29 ⋅3338249.

It is a cyclic number.

It is not a de Polignac number, because 12290869 - 2⁹ = 12290357 is a prime.

It is a super-2 number, since 2×12290869² = 302130921550322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11817 + ... + 12814.

It is an arithmetic number, because the mean of its divisors is an integer number (3079000).

Almost surely, 2^12290869 is an apocalyptic number.

It is an amenable number.

12290869 is a deficient number, since it is larger than the sum of its proper divisors (25131).

12290869 is an equidigital number, since it uses as much as digits as its factorization.

12290869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25130.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 12290869 is about 3505.8335670707. The cubic root of 12290869 is about 230.7778891139. Note that the first 3 decimals are identical.

It can be divided in two parts, 1 and 2290869, that added together give a triangular number (2290870 = T₂₁₄₀).

The spelling of 12290869 in words is "twelve million, two hundred ninety thousand, eight hundred sixty-nine".