259954819 has 2 divisors, whose sum is σ = 259954820. Its totient is φ = 259954818.

The previous prime is 259954781. The next prime is 259954843. The reversal of 259954819 is 918459952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 259954819 - 2¹⁵ = 259922051 is a prime.

It is a super-2 number, since 2×259954819² = 135153015842645522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (259954879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129977409 + 129977410.

It is an arithmetic number, because the mean of its divisors is an integer number (129977410).

Almost surely, 2^259954819 is an apocalyptic number.

259954819 is a deficient number, since it is larger than the sum of its proper divisors (1).

259954819 is an equidigital number, since it uses as much as digits as its factorization.

259954819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 52.

The square root of 259954819 is about 16123.1144323918. The cubic root of 259954819 is about 638.2134574973.

The spelling of 259954819 in words is "two hundred fifty-nine million, nine hundred fifty-four thousand, eight hundred nineteen".