89961287 has 8 divisors (see below), whose sum is σ = 100007040. Its totient is φ = 80362080.

The previous prime is 89961271. The next prime is 89961301. The reversal of 89961287 is 78216998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89961287 - 2⁴ = 89961271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89961227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111212 + ... + 112017.

It is an arithmetic number, because the mean of its divisors is an integer number (12500880).

Almost surely, 2^89961287 is an apocalyptic number.

89961287 is a deficient number, since it is larger than the sum of its proper divisors (10045753).

89961287 is a wasteful number, since it uses less digits than its factorization.

89961287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223273.

The product of its digits is 435456, while the sum is 50.

The square root of 89961287 is about 9484.7924067952. The cubic root of 89961287 is about 448.0762103954.

The spelling of 89961287 in words is "eighty-nine million, nine hundred sixty-one thousand, two hundred eighty-seven".