89645490 has 192 divisors, whose sum is σ = 276037632. Its totient is φ = 19958400.

The previous prime is 89645483. The next prime is 89645509. The reversal of 89645490 is 9454698.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 705807 + ... + 705933.

It is an arithmetic number, because the mean of its divisors is an integer number (1437696).

Almost surely, 2^89645490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89645490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138018816).

89645490 is an abundant number, since it is smaller than the sum of its proper divisors (186392142).

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

89645490 is a wasteful number, since it uses less digits than its factorization.

89645490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 89645490 is about 9468.1302272413. The cubic root of 89645490 is about 447.5512919371.

The spelling of 89645490 in words is "eighty-nine million, six hundred forty-five thousand, four hundred ninety".