259497979 has 24 divisors (see below), whose sum is σ = 304918992. Its totient is φ = 219847680.

The previous prime is 259497967. The next prime is 259498027. The reversal of 259497979 is 979794952.

It is not a de Polignac number, because 259497979 - 2⁷ = 259497851 is a prime.

It is a super-2 number, since 2×259497979² = 134678402210168882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259497929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116692 + ... + 118894.

It is an arithmetic number, because the mean of its divisors is an integer number (12704958).

Almost surely, 2^259497979 is an apocalyptic number.

259497979 is a deficient number, since it is larger than the sum of its proper divisors (45421013).

259497979 is a wasteful number, since it uses less digits than its factorization.

259497979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2274 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 61.

The square root of 259497979 is about 16108.9409645700. The cubic root of 259497979 is about 637.8393765974.

The spelling of 259497979 in words is "two hundred fifty-nine million, four hundred ninety-seven thousand, nine hundred seventy-nine".