99009001 has 16 divisors (see below), whose sum is σ = 122419584. Its totient is φ = 77975424.

The previous prime is 99008999. The next prime is 99009013. The reversal of 99009001 is 10090099.

It is a cyclic number.

It is not a de Polignac number, because 99009001 - 2¹ = 99008999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99009061) 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, 18261 + ... + 23053.

It is an arithmetic number, because the mean of its divisors is an integer number (7651224).

Almost surely, 2^99009001 is an apocalyptic number.

99009001 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

99009001 is a deficient number, since it is larger than the sum of its proper divisors (23410583).

99009001 is a wasteful number, since it uses less digits than its factorization.

99009001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 99009001 is about 9950.3266780543. The cubic root of 99009001 is about 462.6205204298.

The spelling of 99009001 in words is "ninety-nine million, nine thousand, one".