154998009 has 16 divisors (see below), whose sum is σ = 229833600. Its totient is φ = 103238928.

The previous prime is 154998007. The next prime is 154998031. The reversal of 154998009 is 900899451.

It is not a de Polignac number, because 154998009 - 2¹ = 154998007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154998007) 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, 41772 + ... + 45330.

It is an arithmetic number, because the mean of its divisors is an integer number (14364600).

Almost surely, 2^154998009 is an apocalyptic number.

It is an amenable number.

154998009 is a deficient number, since it is larger than the sum of its proper divisors (74835591).

154998009 is a wasteful number, since it uses less digits than its factorization.

154998009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 154998009 is about 12449.8196372478. The cubic root of 154998009 is about 537.1662354791.

The spelling of 154998009 in words is "one hundred fifty-four million, nine hundred ninety-eight thousand, nine".