12402977 has 2 divisors, whose sum is σ = 12402978. Its totient is φ = 12402976.

The previous prime is 12402961. The next prime is 12402997. The reversal of 12402977 is 77920421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8059921 + 4343056 = 2839^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 12402977 - 2⁴ = 12402961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12402917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201488 + 6201489.

It is an arithmetic number, because the mean of its divisors is an integer number (6201489).

Almost surely, 2^12402977 is an apocalyptic number.

It is an amenable number.

12402977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402977 is an equidigital number, since it uses as much as digits as its factorization.

12402977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 12402977 is about 3521.7860525591. The cubic root of 12402977 is about 231.4774269049.

The spelling of 12402977 in words is "twelve million, four hundred two thousand, nine hundred seventy-seven".