12904777 has 2 divisors, whose sum is σ = 12904778. Its totient is φ = 12904776.

The previous prime is 12904763. The next prime is 12904789. The reversal of 12904777 is 77740921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 4748041 = 2856^2 + 2179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12904777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12902777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452388 + 6452389.

It is an arithmetic number, because the mean of its divisors is an integer number (6452389).

Almost surely, 2^12904777 is an apocalyptic number.

It is an amenable number.

12904777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12904777 is an equidigital number, since it uses as much as digits as its factorization.

12904777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 12904777 is about 3592.3219510506. The cubic root of 12904777 is about 234.5579558003.

The spelling of 12904777 in words is "twelve million, nine hundred four thousand, seven hundred seventy-seven".