154604489 has 4 divisors (see below), whose sum is σ = 166497156. Its totient is φ = 142711824.

The previous prime is 154604447. The next prime is 154604491. The reversal of 154604489 is 984406451.

154604489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75394489 + 79210000 = 8683^2 + 8900^2 .

It is a cyclic number.

It is not a de Polignac number, because 154604489 - 2¹⁶ = 154538953 is a prime.

It is a super-2 number, since 2×154604489² = 47805096037902242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154604419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5946314 + ... + 5946339.

It is an arithmetic number, because the mean of its divisors is an integer number (41624289).

Almost surely, 2^154604489 is an apocalyptic number.

It is an amenable number.

154604489 is a deficient number, since it is larger than the sum of its proper divisors (11892667).

154604489 is a wasteful number, since it uses less digits than its factorization.

154604489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892666.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 154604489 is about 12434.0053482376. The cubic root of 154604489 is about 536.7112515630.

The spelling of 154604489 in words is "one hundred fifty-four million, six hundred four thousand, four hundred eighty-nine".