89400287 has 8 divisors (see below), whose sum is σ = 93423456. Its totient is φ = 85388512.

The previous prime is 89400257. The next prime is 89400299. The reversal of 89400287 is 78200498.

89400287 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 89400287 - 2¹⁰ = 89399263 is a prime.

It is a super-2 number, since 2×89400287² = 15984822631364738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89400287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89400217) 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, 15893 + ... + 20769.

It is an arithmetic number, because the mean of its divisors is an integer number (11677932).

Almost surely, 2^89400287 is an apocalyptic number.

89400287 is a deficient number, since it is larger than the sum of its proper divisors (4023169).

89400287 is a wasteful number, since it uses less digits than its factorization.

89400287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 89400287 is about 9455.1724997485. The cubic root of 89400287 is about 447.1428641470.

The spelling of 89400287 in words is "eighty-nine million, four hundred thousand, two hundred eighty-seven".