87478459 has 4 divisors (see below), whose sum is σ = 87514504. Its totient is φ = 87442416.

The previous prime is 87478439. The next prime is 87478463. The reversal of 87478459 is 95487478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95487478 = 2 ⋅47743739.

It is a cyclic number.

It is not a de Polignac number, because 87478459 - 2⁵ = 87478427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87478409) 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, 14097 + ... + 19330.

It is an arithmetic number, because the mean of its divisors is an integer number (21878626).

Almost surely, 2^87478459 is an apocalyptic number.

87478459 is a deficient number, since it is larger than the sum of its proper divisors (36045).

87478459 is a wasteful number, since it uses less digits than its factorization.

87478459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36044.

The product of its digits is 2257920, while the sum is 52.

The square root of 87478459 is about 9352.9919811791. The cubic root of 87478459 is about 443.9155667573.

The spelling of 87478459 in words is "eighty-seven million, four hundred seventy-eight thousand, four hundred fifty-nine".