259490091 has 32 divisors (see below), whose sum is σ = 423429120. Its totient is φ = 137972736.

The previous prime is 259490089. The next prime is 259490093. The reversal of 259490091 is 190094952.

It is an interprime number because it is at equal distance from previous prime (259490089) and next prime (259490093).

It is not a de Polignac number, because 259490091 - 2¹ = 259490089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259490093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27690 + ... + 35856.

It is an arithmetic number, because the mean of its divisors is an integer number (13232160).

Almost surely, 2^259490091 is an apocalyptic number.

259490091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

259490091 is a deficient number, since it is larger than the sum of its proper divisors (163939029).

259490091 is a wasteful number, since it uses less digits than its factorization.

259490091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 259490091 is about 16108.6961297307. The cubic root of 259490091 is about 637.8329136981.

The spelling of 259490091 in words is "two hundred fifty-nine million, four hundred ninety thousand, ninety-one".