89890549 has 6 divisors (see below), whose sum is σ = 104566614. Its totient is φ = 77049000.

The previous prime is 89890547. The next prime is 89890553. The reversal of 89890549 is 94509898.

It can be written as a sum of positive squares in only one way, i.e., 70442449 + 19448100 = 8393^2 + 4410^2 .

It is not a de Polignac number, because 89890549 - 2¹ = 89890547 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89890496 and 89890505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89890547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 917202 + ... + 917299.

It is an arithmetic number, because the mean of its divisors is an integer number (17427769).

Almost surely, 2^89890549 is an apocalyptic number.

It is an amenable number.

89890549 is a deficient number, since it is larger than the sum of its proper divisors (14676065).

89890549 is a wasteful number, since it uses less digits than its factorization.

89890549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834515 (or 1834508 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 89890549 is about 9481.0626514120. The cubic root of 89890549 is about 447.9587364339.

The spelling of 89890549 in words is "eighty-nine million, eight hundred ninety thousand, five hundred forty-nine".