89784379 has 8 divisors (see below), whose sum is σ = 91905632. Its totient is φ = 87687360.

The previous prime is 89784353. The next prime is 89784389. The reversal of 89784379 is 97348798.

89784379 = 67³ + 68³ + ... + 139³.

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 89784379 - 2⁵ = 89784347 is a prime.

It is a super-2 number, since 2×89784379² = 16122469424831282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89784349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1549 + ... + 13489.

It is an arithmetic number, because the mean of its divisors is an integer number (11488204).

Almost surely, 2^89784379 is an apocalyptic number.

89784379 is a deficient number, since it is larger than the sum of its proper divisors (2121253).

89784379 is a wasteful number, since it uses less digits than its factorization.

89784379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12117.

The product of its digits is 3048192, while the sum is 55.

The square root of 89784379 is about 9475.4619412459. The cubic root of 89784379 is about 447.7823051471.

The spelling of 89784379 in words is "eighty-nine million, seven hundred eighty-four thousand, three hundred seventy-nine".