89982478 has 4 divisors (see below), whose sum is σ = 134973720. Its totient is φ = 44991238.

The previous prime is 89982467. The next prime is 89982481. The reversal of 89982478 is 87428998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87428998 = 2 ⋅43714499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22495618 + ... + 22495621.

It is an arithmetic number, because the mean of its divisors is an integer number (33743430).

Almost surely, 2^89982478 is an apocalyptic number.

89982478 is a deficient number, since it is larger than the sum of its proper divisors (44991242).

89982478 is a wasteful number, since it uses less digits than its factorization.

89982478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44991241.

The product of its digits is 2322432, while the sum is 55.

The square root of 89982478 is about 9485.9094450664. The cubic root of 89982478 is about 448.1113901111. Note that the first 3 decimals are identical.

It can be divided in two parts, 8998 and 2478, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 89982478 in words is "eighty-nine million, nine hundred eighty-two thousand, four hundred seventy-eight".