89193987 has 16 divisors (see below), whose sum is σ = 133109280. Its totient is φ = 59026176.

The previous prime is 89193971. The next prime is 89193991. The reversal of 89193987 is 78939198.

It is not a de Polignac number, because 89193987 - 2⁴ = 89193971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89193947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8358 + ... + 15755.

It is an arithmetic number, because the mean of its divisors is an integer number (8319330).

Almost surely, 2^89193987 is an apocalyptic number.

89193987 is a deficient number, since it is larger than the sum of its proper divisors (43915293).

89193987 is a wasteful number, since it uses less digits than its factorization.

89193987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24259 (or 24253 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 89193987 is about 9444.2568262410. The cubic root of 89193987 is about 446.7986571266.

The spelling of 89193987 in words is "eighty-nine million, one hundred ninety-three thousand, nine hundred eighty-seven".