88399999989 has 24 divisors (see below), whose sum is σ = 146064522240. Its totient is φ = 50467775328.

The previous prime is 88399999927. The next prime is 88399999991. The reversal of 88399999989 is 98999999388.

It is not a de Polignac number, because 88399999989 - 2⁹ = 88399999477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 88399999899 and 88399999908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88399998989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 576954 + ... + 713915.

It is an arithmetic number, because the mean of its divisors is an integer number (6086021760).

Almost surely, 2^88399999989 is an apocalyptic number.

It is an amenable number.

88399999989 is a deficient number, since it is larger than the sum of its proper divisors (57664522251).

88399999989 is a wasteful number, since it uses less digits than its factorization.

88399999989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291969 (or 1291966 counting only the distinct ones).

The product of its digits is 7346640384, while the sum is 90.

The spelling of 88399999989 in words is "eighty-eight billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".