89439999 has 8 divisors (see below), whose sum is σ = 130094592. Its totient is φ = 54206040.

The previous prime is 89439943. The next prime is 89440007. The reversal of 89439999 is 99993498.

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

It is not a de Polignac number, because 89439999 - 2⁹ = 89439487 is a prime.

It is a super-2 number, since 2×89439999² = 15999026842240002, which contains 22 as substring.

89439999 is a modest number, since divided by 9999 gives 8943 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89439599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355119 + ... + 1355184.

It is an arithmetic number, because the mean of its divisors is an integer number (16261824).

Almost surely, 2^89439999 is an apocalyptic number.

89439999 is a deficient number, since it is larger than the sum of its proper divisors (40654593).

89439999 is a wasteful number, since it uses less digits than its factorization.

89439999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710317.

The product of its digits is 5668704, while the sum is 60.

The square root of 89439999 is about 9457.2722811601. The cubic root of 89439999 is about 447.2090619540.

It can be divided in two parts, 894399 and 99, that added together give a palindrome (894498).

The spelling of 89439999 in words is "eighty-nine million, four hundred thirty-nine thousand, nine hundred ninety-nine".