89709837 has 12 divisors (see below), whose sum is σ = 139142016. Its totient is φ = 51262680.

The previous prime is 89709817. The next prime is 89709853. The reversal of 89709837 is 73890798.

It is a happy number.

It is not a de Polignac number, because 89709837 - 2⁷ = 89709709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89709837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89709817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304989 + ... + 305282.

It is an arithmetic number, because the mean of its divisors is an integer number (11595168).

Almost surely, 2^89709837 is an apocalyptic number.

It is an amenable number.

89709837 is a deficient number, since it is larger than the sum of its proper divisors (49432179).

89709837 is a wasteful number, since it uses less digits than its factorization.

89709837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610288 (or 610281 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 89709837 is about 9471.5277014851. The cubic root of 89709837 is about 447.6583495453.

The spelling of 89709837 in words is "eighty-nine million, seven hundred nine thousand, eight hundred thirty-seven".