89487779 has 8 divisors (see below), whose sum is σ = 98871840. Its totient is φ = 80561536.

The previous prime is 89487721. The next prime is 89487781. The reversal of 89487779 is 97778498.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89487779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89487709) 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, 114044 + ... + 114825.

It is an arithmetic number, because the mean of its divisors is an integer number (12358980).

Almost surely, 2^89487779 is an apocalyptic number.

89487779 is a deficient number, since it is larger than the sum of its proper divisors (9384061).

89487779 is a wasteful number, since it uses less digits than its factorization.

89487779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228909.

The product of its digits is 7112448, while the sum is 59.

The square root of 89487779 is about 9459.7980422417. The cubic root of 89487779 is about 447.2886827254.

The spelling of 89487779 in words is "eighty-nine million, four hundred eighty-seven thousand, seven hundred seventy-nine".