89890745040 has 120 divisors (see below), whose sum is σ = 304814240640. Its totient is φ = 23738118912.

The previous prime is 89890745039. The next prime is 89890745041. The reversal of 89890745040 is 4054709898.

It is an interprime number because it is at equal distance from previous prime (89890745039) and next prime (89890745041).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89890745041) 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, 531900 + ... + 680219.

It is an arithmetic number, because the mean of its divisors is an integer number (2540118672).

Almost surely, 2^89890745040 is an apocalyptic number.

89890745040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89890745040 is an abundant number, since it is smaller than the sum of its proper divisors (214923495600).

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

89890745040 is a wasteful number, since it uses less digits than its factorization.

89890745040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212241 (or 1212232 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 89890745040 in words is "eighty-nine billion, eight hundred ninety million, seven hundred forty-five thousand, forty".