89040405 has 16 divisors (see below), whose sum is σ = 142652160. Its totient is φ = 47425728.

The previous prime is 89040379. The next prime is 89040409. The reversal of 89040405 is 50404098.

It is not a de Polignac number, because 89040405 - 2¹⁰ = 89039381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89040409) 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 15 ways as a sum of consecutive naturals, for example, 9316 + ... + 16274.

It is an arithmetic number, because the mean of its divisors is an integer number (8915760).

Almost surely, 2^89040405 is an apocalyptic number.

It is an amenable number.

89040405 is a deficient number, since it is larger than the sum of its proper divisors (53611755).

89040405 is a wasteful number, since it uses less digits than its factorization.

89040405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 89040405 is about 9436.1223497791. The cubic root of 89040405 is about 446.5420641401.

The spelling of 89040405 in words is "eighty-nine million, forty thousand, four hundred five".