89549961 has 4 divisors (see below), whose sum is σ = 119399952. Its totient is φ = 59699972.

The previous prime is 89549959. The next prime is 89549963. The reversal of 89549961 is 16994598.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (89549959) and next prime (89549963).

It is a cyclic number.

It is not a de Polignac number, because 89549961 - 2¹ = 89549959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89549963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14924991 + ... + 14924996.

It is an arithmetic number, because the mean of its divisors is an integer number (29849988).

Almost surely, 2^89549961 is an apocalyptic number.

It is an amenable number.

89549961 is a deficient number, since it is larger than the sum of its proper divisors (29849991).

89549961 is a wasteful number, since it uses less digits than its factorization.

89549961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29849990.

The product of its digits is 699840, while the sum is 51.

The square root of 89549961 is about 9463.0841167137. The cubic root of 89549961 is about 447.3922606124.

It can be divided in two parts, 8954 and 9961, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 89549961 in words is "eighty-nine million, five hundred forty-nine thousand, nine hundred sixty-one".