1246654879 has 2 divisors, whose sum is σ = 1246654880. Its totient is φ = 1246654878.

The previous prime is 1246654861. The next prime is 1246654883. The reversal of 1246654879 is 9784566421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1246654879 - 2¹⁷ = 1246523807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1246624879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623327439 + 623327440.

It is an arithmetic number, because the mean of its divisors is an integer number (623327440).

Almost surely, 2^1246654879 is an apocalyptic number.

1246654879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246654879 is an equidigital number, since it uses as much as digits as its factorization.

1246654879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 52.

The square root of 1246654879 is about 35308.0002124164. Note that the first 3 decimals coincide. The cubic root of 1246654879 is about 1076.2555739443.

The spelling of 1246654879 in words is "one billion, two hundred forty-six million, six hundred fifty-four thousand, eight hundred seventy-nine".