12377945 has 8 divisors (see below), whose sum is σ = 14897736. Its totient is φ = 9872896.

The previous prime is 12377929. The next prime is 12377947. The reversal of 12377945 is 54977321.

It can be written as a sum of positive squares in 4 ways, for example, as 2468041 + 9909904 = 1571^2 + 3148^2 .

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 12377945 - 2⁴ = 12377929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12377899 and 12377908.

It is not an unprimeable number, because it can be changed into a prime (12377947) 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, 1742 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (1862217).

Almost surely, 2^12377945 is an apocalyptic number.

It is an amenable number.

12377945 is a deficient number, since it is larger than the sum of its proper divisors (2519791).

12377945 is an equidigital number, since it uses as much as digits as its factorization.

12377945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371.

The product of its digits is 52920, while the sum is 38.

The square root of 12377945 is about 3518.2303790400. The cubic root of 12377945 is about 231.3215975041.

The spelling of 12377945 in words is "twelve million, three hundred seventy-seven thousand, nine hundred forty-five".