89278361 has 4 divisors (see below), whose sum is σ = 91455924. Its totient is φ = 87100800.

The previous prime is 89278351. The next prime is 89278381. The reversal of 89278361 is 16387298.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16387298 = 2 ⋅8193649.

It can be written as a sum of positive squares in 2 ways, for example, as 43296400 + 45981961 = 6580^2 + 6781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89278361 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (89278351) 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 3 ways as a sum of consecutive naturals, for example, 1088720 + ... + 1088801.

It is an arithmetic number, because the mean of its divisors is an integer number (22863981).

Almost surely, 2^89278361 is an apocalyptic number.

It is an amenable number.

89278361 is a deficient number, since it is larger than the sum of its proper divisors (2177563).

89278361 is a wasteful number, since it uses less digits than its factorization.

89278361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177562.

The product of its digits is 145152, while the sum is 44.

The square root of 89278361 is about 9448.7227179127. The cubic root of 89278361 is about 446.9394973723.

The spelling of 89278361 in words is "eighty-nine million, two hundred seventy-eight thousand, three hundred sixty-one".