89721849 has 8 divisors (see below), whose sum is σ = 136719040. Its totient is φ = 51269616.

The previous prime is 89721847. The next prime is 89721851. The reversal of 89721849 is 94812798.

It is an interprime number because it is at equal distance from previous prime (89721847) and next prime (89721851).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89721849 - 2¹ = 89721847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89721798 and 89721807.

It is not an unprimeable number, because it can be changed into a prime (89721847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2136214 + ... + 2136255.

It is an arithmetic number, because the mean of its divisors is an integer number (17089880).

Almost surely, 2^89721849 is an apocalyptic number.

It is an amenable number.

89721849 is a deficient number, since it is larger than the sum of its proper divisors (46997191).

89721849 is a wasteful number, since it uses less digits than its factorization.

89721849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272479.

The product of its digits is 290304, while the sum is 48.

The square root of 89721849 is about 9472.1617912702. The cubic root of 89721849 is about 447.6783288931.

The spelling of 89721849 in words is "eighty-nine million, seven hundred twenty-one thousand, eight hundred forty-nine".