2406278489 has 2 divisors, whose sum is σ = 2406278490. Its totient is φ = 2406278488.

The previous prime is 2406278467. The next prime is 2406278507. The reversal of 2406278489 is 9848726042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2108370889 + 297907600 = 45917^2 + 17260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2406278489 - 2²⁰ = 2405229913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2406278429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1203139244 + 1203139245.

It is an arithmetic number, because the mean of its divisors is an integer number (1203139245).

Almost surely, 2^2406278489 is an apocalyptic number.

It is an amenable number.

2406278489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2406278489 is an equidigital number, since it uses as much as digits as its factorization.

2406278489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 2406278489 is about 49053.8325617887. The cubic root of 2406278489 is about 1340.0323911751.

The spelling of 2406278489 in words is "two billion, four hundred six million, two hundred seventy-eight thousand, four hundred eighty-nine".