89438677969 has 3 divisors (see below), whose sum is σ = 89438977033. Its totient is φ = 89438378906.

The previous prime is 89438677961. The next prime is 89438678009. The reversal of 89438677969 is 96977683498.

It is a happy number.

The square root of 89438677969 is 299063.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96977683498 = 2 ⋅48488841749.

It is not a de Polignac number, because 89438677969 - 2³ = 89438677961 is a prime.

It is a super-2 number, since 2×89438677969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89438677895 and 89438677904.

It is not an unprimeable number, because it can be changed into a prime (89438677961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 149532 + ... + 448594.

Almost surely, 2^89438677969 is an apocalyptic number.

89438677969 is the 299063-rd square number.

89438677969 is the 149532-nd centered octagonal number.

It is an amenable number.

89438677969 is a deficient number, since it is larger than the sum of its proper divisors (299064).

89438677969 is an frugal number, since it uses more digits than its factorization.

89438677969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598126 (or 299063 counting only the distinct ones).

The product of its digits is 987614208, while the sum is 76.

The spelling of 89438677969 in words is "eighty-nine billion, four hundred thirty-eight million, six hundred seventy-seven thousand, nine hundred sixty-nine".