87641459 has 4 divisors (see below), whose sum is σ = 87804000. Its totient is φ = 87478920.

The previous prime is 87641441. The next prime is 87641479. The reversal of 87641459 is 95414678.

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-87641459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87641429) 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, 80459 + ... + 81540.

It is an arithmetic number, because the mean of its divisors is an integer number (21951000).

Almost surely, 2^87641459 is an apocalyptic number.

87641459 is a deficient number, since it is larger than the sum of its proper divisors (162541).

87641459 is a wasteful number, since it uses less digits than its factorization.

87641459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162540.

The product of its digits is 241920, while the sum is 44.

The square root of 87641459 is about 9361.7017149661. The cubic root of 87641459 is about 444.1911139895.

It can be divided in two parts, 8 and 7641459, that added together give a palindrome (7641467).

The spelling of 87641459 in words is "eighty-seven million, six hundred forty-one thousand, four hundred fifty-nine".