12169391 has 8 divisors (see below), whose sum is σ = 13528704. Its totient is φ = 10870560.

The previous prime is 12169379. The next prime is 12169403. The reversal of 12169391 is 19396121.

It is an interprime number because it is at equal distance from previous prime (12169379) and next prime (12169403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12169391 - 2⁶ = 12169327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14696 + ... + 15501.

It is an arithmetic number, because the mean of its divisors is an integer number (1691088).

Almost surely, 2^12169391 is an apocalyptic number.

12169391 is a deficient number, since it is larger than the sum of its proper divisors (1359313).

12169391 is a wasteful number, since it uses less digits than its factorization.

12169391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30241.

The product of its digits is 2916, while the sum is 32.

The square root of 12169391 is about 3488.4654219298. The cubic root of 12169391 is about 230.0150651758.

The spelling of 12169391 in words is "twelve million, one hundred sixty-nine thousand, three hundred ninety-one".