87259499 has 4 divisors (see below), whose sum is σ = 87297936. Its totient is φ = 87221064.

The previous prime is 87259489. The next prime is 87259511. The reversal of 87259499 is 99495278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99495278 = 2 ⋅49747639.

It is a cyclic number.

It is not a de Polignac number, because 87259499 - 2⁴ = 87259483 is a prime.

It is a super-2 number, since 2×87259499² = 15228440331462002, 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 87259499.

It is not an unprimeable number, because it can be changed into a prime (87259489) 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, 15584 + ... + 20429.

It is an arithmetic number, because the mean of its divisors is an integer number (21824484).

Almost surely, 2^87259499 is an apocalyptic number.

87259499 is a deficient number, since it is larger than the sum of its proper divisors (38437).

87259499 is a wasteful number, since it uses less digits than its factorization.

87259499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38436.

The product of its digits is 1632960, while the sum is 53.

The square root of 87259499 is about 9341.2793021085. The cubic root of 87259499 is about 443.5448813563.

The spelling of 87259499 in words is "eighty-seven million, two hundred fifty-nine thousand, four hundred ninety-nine".