89436906439 has 4 divisors (see below), whose sum is σ = 89784910224. Its totient is φ = 89088902656.

The previous prime is 89436906431. The next prime is 89436906443. The reversal of 89436906439 is 93460963498.

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

It is a cyclic number.

It is not a de Polignac number, because 89436906439 - 2³ = 89436906431 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 (89436906431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174001507 + ... + 174002020.

It is an arithmetic number, because the mean of its divisors is an integer number (22446227556).

Almost surely, 2^89436906439 is an apocalyptic number.

89436906439 is a deficient number, since it is larger than the sum of its proper divisors (348003785).

89436906439 is a wasteful number, since it uses less digits than its factorization.

89436906439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348003784.

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 89436906439 in words is "eighty-nine billion, four hundred thirty-six million, nine hundred six thousand, four hundred thirty-nine".