89555138 has 4 divisors (see below), whose sum is σ = 134332710. Its totient is φ = 44777568.

The previous prime is 89555131. The next prime is 89555143. The reversal of 89555138 is 83155598.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83155598 = 2 ⋅41577799.

It can be written as a sum of positive squares in only one way, i.e., 85803169 + 3751969 = 9263^2 + 1937^2 .

It is not an unprimeable number, because it can be changed into a prime (89555131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22388783 + ... + 22388786.

Almost surely, 2^89555138 is an apocalyptic number.

89555138 is a deficient number, since it is larger than the sum of its proper divisors (44777572).

89555138 is a wasteful number, since it uses less digits than its factorization.

89555138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44777571.

The product of its digits is 216000, while the sum is 44.

The square root of 89555138 is about 9463.3576493758. The cubic root of 89555138 is about 447.4008818896.

The spelling of 89555138 in words is "eighty-nine million, five hundred fifty-five thousand, one hundred thirty-eight".