12477969 has 40 divisors (see below), whose sum is σ = 21721920. Its totient is φ = 6990624.

The previous prime is 12477961. The next prime is 12477973. The reversal of 12477969 is 96977421.

12477969 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12477969 - 2³ = 12477961 is a prime.

It is a super-2 number, since 2×12477969² = 311399420729922, which contains 22 as substring.

12477969 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477961) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33267 + ... + 33639.

It is an arithmetic number, because the mean of its divisors is an integer number (543048).

Almost surely, 2^12477969 is an apocalyptic number.

It is an amenable number.

12477969 is a deficient number, since it is larger than the sum of its proper divisors (9243951).

12477969 is an equidigital number, since it uses as much as digits as its factorization.

12477969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 442 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 12477969 is about 3532.4168780029. The cubic root of 12477969 is about 231.9430163755.

It can be divided in two parts, 1247 and 7969, that added together give a square (9216 = 96²).

The spelling of 12477969 in words is "twelve million, four hundred seventy-seven thousand, nine hundred sixty-nine".