89430709 has 4 divisors (see below), whose sum is σ = 89540460. Its totient is φ = 89320960.

The previous prime is 89430703. The next prime is 89430721. The reversal of 89430709 is 90703498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90703498 = 2 ⋅45351749.

It can be written as a sum of positive squares in 2 ways, for example, as 28121809 + 61308900 = 5303^2 + 7830^2 .

It is a cyclic number.

It is not a de Polignac number, because 89430709 - 2⁹ = 89430197 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89430703) 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, 53644 + ... + 55285.

It is an arithmetic number, because the mean of its divisors is an integer number (22385115).

Almost surely, 2^89430709 is an apocalyptic number.

It is an amenable number.

89430709 is a deficient number, since it is larger than the sum of its proper divisors (109751).

89430709 is a wasteful number, since it uses less digits than its factorization.

89430709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109750.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 89430709 is about 9456.7811119852. The cubic root of 89430709 is about 447.1935777706.

The spelling of 89430709 in words is "eighty-nine million, four hundred thirty thousand, seven hundred nine".