87259319 has 4 divisors (see below), whose sum is σ = 99724944. Its totient is φ = 74793696.

The previous prime is 87259223. The next prime is 87259321. The reversal of 87259319 is 91395278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87259319 is a prime.

It is a super-2 number, since 2×87259319² = 15228377504687522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87259319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87259339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6232802 + ... + 6232815.

It is an arithmetic number, because the mean of its divisors is an integer number (24931236).

Almost surely, 2^87259319 is an apocalyptic number.

87259319 is a deficient number, since it is larger than the sum of its proper divisors (12465625).

87259319 is a wasteful number, since it uses less digits than its factorization.

87259319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12465624.

The product of its digits is 136080, while the sum is 44.

The square root of 87259319 is about 9341.2696674489. The cubic root of 87259319 is about 443.5445763727.

It can be divided in two parts, 87259 and 319, that added together give a palindrome (87578).

The spelling of 87259319 in words is "eighty-seven million, two hundred fifty-nine thousand, three hundred nineteen".