89261279 has 4 divisors (see below), whose sum is σ = 91673784. Its totient is φ = 86848776.

The previous prime is 89261273. The next prime is 89261317. The reversal of 89261279 is 97216298.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89261279 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 (89261273) 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, 1206197 + ... + 1206270.

It is an arithmetic number, because the mean of its divisors is an integer number (22918446).

Almost surely, 2^89261279 is an apocalyptic number.

89261279 is a deficient number, since it is larger than the sum of its proper divisors (2412505).

89261279 is a wasteful number, since it uses less digits than its factorization.

89261279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412504.

The product of its digits is 108864, while the sum is 44.

The square root of 89261279 is about 9447.8187429692. The cubic root of 89261279 is about 446.9109906234.

The spelling of 89261279 in words is "eighty-nine million, two hundred sixty-one thousand, two hundred seventy-nine".