89979745 has 8 divisors (see below), whose sum is σ = 110894184. Its totient is φ = 70038144.

The previous prime is 89979733. The next prime is 89979751. The reversal of 89979745 is 54797998.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7551504 + 82428241 = 2748^2 + 9079^2 .

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 89979745 - 2⁵ = 89979713 is a prime.

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 89979745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243004 + ... + 243373.

It is an arithmetic number, because the mean of its divisors is an integer number (13861773).

Almost surely, 2^89979745 is an apocalyptic number.

It is an amenable number.

89979745 is a deficient number, since it is larger than the sum of its proper divisors (20914439).

89979745 is a wasteful number, since it uses less digits than its factorization.

89979745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486419.

The product of its digits is 5715360, while the sum is 58.

The square root of 89979745 is about 9485.7653882014. The cubic root of 89979745 is about 448.1068532989.

The spelling of 89979745 in words is "eighty-nine million, nine hundred seventy-nine thousand, seven hundred forty-five".