10009090 has 64 divisors (see below), whose sum is σ = 23514624. Its totient is φ = 2976768.

The previous prime is 10009079. The next prime is 10009091. The reversal of 10009090 is 9090001.

10009090 is a modest number, since divided by 9090 gives 1000 as remainder.

It is not an unprimeable number, because it can be changed into a prime (10009091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15147 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (367416).

Almost surely, 2^10009090 is an apocalyptic number.

10009090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10009090 is an abundant number, since it is smaller than the sum of its proper divisors (13505534).

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

10009090 is a wasteful number, since it uses less digits than its factorization.

10009090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 10009090 is about 3163.7145888970. The cubic root of 10009090 is about 215.5087286046.

Adding to 10009090 its reverse (9090001), we get a palindrome (19099091).

The spelling of 10009090 in words is "ten million, nine thousand, ninety".