154412109 has 16 divisors (see below), whose sum is σ = 234339840. Its totient is φ = 100429920.

The previous prime is 154412101. The next prime is 154412119. The reversal of 154412109 is 901214451.

154412109 is a `hidden beast` number, since 1 + 5 + 441 + 210 + 9 = 666.

It is not a de Polignac number, because 154412109 - 2³ = 154412101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154412101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68637 + ... + 70850.

It is an arithmetic number, because the mean of its divisors is an integer number (14646240).

Almost surely, 2^154412109 is an apocalyptic number.

It is an amenable number.

154412109 is a deficient number, since it is larger than the sum of its proper divisors (79927731).

154412109 is a wasteful number, since it uses less digits than its factorization.

154412109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139537 (or 139531 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 154412109 is about 12426.2668971820. The cubic root of 154412109 is about 536.4885427058.

The spelling of 154412109 in words is "one hundred fifty-four million, four hundred twelve thousand, one hundred nine".