12459945 has 16 divisors (see below), whose sum is σ = 20115072. Its totient is φ = 6585600.

The previous prime is 12459943. The next prime is 12459947. The reversal of 12459945 is 54995421.

It is an interprime number because it is at equal distance from previous prime (12459943) and next prime (12459947).

It is not a de Polignac number, because 12459945 - 2¹ = 12459943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12459943) 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, 1981 + ... + 5370.

It is an arithmetic number, because the mean of its divisors is an integer number (1257192).

Almost surely, 2^12459945 is an apocalyptic number.

12459945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12459945 is a deficient number, since it is larger than the sum of its proper divisors (7655127).

12459945 is a wasteful number, since it uses less digits than its factorization.

12459945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472.

The product of its digits is 64800, while the sum is 39.

The square root of 12459945 is about 3529.8647282863. The cubic root of 12459945 is about 231.8312846391.

The spelling of 12459945 in words is "twelve million, four hundred fifty-nine thousand, nine hundred forty-five".