2558397979 has 2 divisors, whose sum is σ = 2558397980. Its totient is φ = 2558397978.

The previous prime is 2558397811. The next prime is 2558397997. The reversal of 2558397979 is 9797938552.

2558397979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (2558397997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2558397979 - 2¹³ = 2558389787 is a prime.

It is a super-3 number, since 3×2558397979³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2558397979.

It is not a weakly prime, because it can be changed into another prime (2558397679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279198989 + 1279198990.

It is an arithmetic number, because the mean of its divisors is an integer number (1279198990).

Almost surely, 2^2558397979 is an apocalyptic number.

2558397979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2558397979 is an equidigital number, since it uses as much as digits as its factorization.

2558397979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42865200, while the sum is 64.

The square root of 2558397979 is about 50580.6087250836. The cubic root of 2558397979 is about 1367.6953418197.

The spelling of 2558397979 in words is "two billion, five hundred fifty-eight million, three hundred ninety-seven thousand, nine hundred seventy-nine".