12649269 has 16 divisors (see below), whose sum is σ = 17835200. Its totient is φ = 7952256.

The previous prime is 12649261. The next prime is 12649277. The reversal of 12649269 is 96294621.

It is an interprime number because it is at equal distance from previous prime (12649261) and next prime (12649277).

It is not a de Polignac number, because 12649269 - 2³ = 12649261 is a prime.

It is a super-2 number, since 2×12649269² = 320008012468722, 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 (12649261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17487 + ... + 18195.

It is an arithmetic number, because the mean of its divisors is an integer number (1114700).

Almost surely, 2^12649269 is an apocalyptic number.

12649269 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12649269 is a deficient number, since it is larger than the sum of its proper divisors (5185931).

12649269 is a wasteful number, since it uses less digits than its factorization.

12649269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 46656, while the sum is 39.

The square root of 12649269 is about 3556.5810830065. The cubic root of 12649269 is about 232.9995824807. Note that the first 3 decimals are identical.

The spelling of 12649269 in words is "twelve million, six hundred forty-nine thousand, two hundred sixty-nine".