89430973633 has 16 divisors (see below), whose sum is σ = 94540614480. Its totient is φ = 84466077696.

The previous prime is 89430973613. The next prime is 89430973651. The reversal of 89430973633 is 33637903498.

It can be written as a sum of positive squares in 8 ways, for example, as 1211875344 + 88219098289 = 34812^2 + 297017^2 .

It is a 2-Lehmer number, since φ(89430973633) divides (89430973633-1)².

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 89430973633 - 2¹³ = 89430965441 is a prime.

It is a deceptive number, since it divides R_89430973632.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89430973603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431641 + ... + 604297.

It is an arithmetic number, because the mean of its divisors is an integer number (5908788405).

It is a Poulet number, since it divides 2^89430973632-1.

Almost surely, 2^89430973633 is an apocalyptic number.

89430973633 is the 172657-th octagonal number.

It is an amenable number.

89430973633 is a deficient number, since it is larger than the sum of its proper divisors (5109640847).

89430973633 is a wasteful number, since it uses less digits than its factorization.

89430973633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173076.

The product of its (nonzero) digits is 8817984, while the sum is 55.

The spelling of 89430973633 in words is "eighty-nine billion, four hundred thirty million, nine hundred seventy-three thousand, six hundred thirty-three".