87259449 has 4 divisors (see below), whose sum is σ = 116345936. Its totient is φ = 58172964.

The previous prime is 87259411. The next prime is 87259483. The reversal of 87259449 is 94495278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 87259449 - 2⁷ = 87259321 is a prime.

It is a super-2 number, since 2×87259449² = 15228422879567202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87259398 and 87259407.

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, 14543239 + ... + 14543244.

It is an arithmetic number, because the mean of its divisors is an integer number (29086484).

Almost surely, 2^87259449 is an apocalyptic number.

It is an amenable number.

87259449 is a deficient number, since it is larger than the sum of its proper divisors (29086487).

87259449 is a wasteful number, since it uses less digits than its factorization.

87259449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29086486.

The product of its digits is 725760, while the sum is 48.

The square root of 87259449 is about 9341.2766258151. The cubic root of 87259449 is about 443.5447966386.

The spelling of 87259449 in words is "eighty-seven million, two hundred fifty-nine thousand, four hundred forty-nine".