89867878 has 4 divisors (see below), whose sum is σ = 134801820. Its totient is φ = 44933938.

The previous prime is 89867873. The next prime is 89867887. The reversal of 89867878 is 87876898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87876898 = 2 ⋅43938449.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89867873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22466968 + ... + 22466971.

It is an arithmetic number, because the mean of its divisors is an integer number (33700455).

Almost surely, 2^89867878 is an apocalyptic number.

89867878 is a deficient number, since it is larger than the sum of its proper divisors (44933942).

89867878 is a wasteful number, since it uses less digits than its factorization.

89867878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44933941.

The product of its digits is 10838016, while the sum is 61.

The square root of 89867878 is about 9479.8669821891. The cubic root of 89867878 is about 447.9210738671.

The spelling of 89867878 in words is "eighty-nine million, eight hundred sixty-seven thousand, eight hundred seventy-eight".