89039940 has 48 divisors (see below), whose sum is σ = 271978560. Its totient is φ = 21585280.

The previous prime is 89039939. The next prime is 89039941. The reversal of 89039940 is 4993098.

It is an interprime number because it is at equal distance from previous prime (89039939) and next prime (89039941).

It is a super-2 number, since 2×89039940² = 15856221830407200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89039892 and 89039901.

It is not an unprimeable number, because it can be changed into a prime (89039941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66795 + ... + 68114.

It is an arithmetic number, because the mean of its divisors is an integer number (5666220).

Almost surely, 2^89039940 is an apocalyptic number.

It is an amenable number.

89039940 is an abundant number, since it is smaller than the sum of its proper divisors (182938620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89039940 is a wasteful number, since it uses less digits than its factorization.

89039940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134932 (or 134930 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 89039940 is about 9436.0977103885. The cubic root of 89039940 is about 446.5412868060.

The spelling of 89039940 in words is "eighty-nine million, thirty-nine thousand, nine hundred forty".