89509090 has 32 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 31497600.

The previous prime is 89509073. The next prime is 89509093. The reversal of 89509090 is 9090598.

89509090 is a modest number, since divided by 9090 gives 8950 as remainder.

It is not an unprimeable number, because it can be changed into a prime (89509093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9715 + ... + 16534.

It is an arithmetic number, because the mean of its divisors is an integer number (5670000).

Almost surely, 2^89509090 is an apocalyptic number.

89509090 is an abundant number, since it is smaller than the sum of its proper divisors (91930910).

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

89509090 is a wasteful number, since it uses less digits than its factorization.

89509090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26298.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 89509090 is about 9460.9243734426. The cubic root of 89509090 is about 447.3241863165.

The spelling of 89509090 in words is "eighty-nine million, five hundred nine thousand, ninety".