2421679817 has 2 divisors, whose sum is σ = 2421679818. Its totient is φ = 2421679816.

The previous prime is 2421679783. The next prime is 2421679831. The reversal of 2421679817 is 7189761242.

2421679817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2296709776 + 124970041 = 47924^2 + 11179^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421679817 - 2¹⁶ = 2421614281 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421679837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210839908 + 1210839909.

It is an arithmetic number, because the mean of its divisors is an integer number (1210839909).

Almost surely, 2^2421679817 is an apocalyptic number.

It is an amenable number.

2421679817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421679817 is an equidigital number, since it uses as much as digits as its factorization.

2421679817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 2421679817 is about 49210.5661113546. The cubic root of 2421679817 is about 1342.8852616668.

The spelling of 2421679817 in words is "two billion, four hundred twenty-one million, six hundred seventy-nine thousand, eight hundred seventeen".