154889473 has 4 divisors (see below), whose sum is σ = 155321280. Its totient is φ = 154457668.

The previous prime is 154889453. The next prime is 154889489. The reversal of 154889473 is 374988451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154889473 - 2¹³ = 154881281 is a prime.

It is a super-3 number, since 3×154889473³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154889453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215365 + ... + 216082.

It is an arithmetic number, because the mean of its divisors is an integer number (38830320).

Almost surely, 2^154889473 is an apocalyptic number.

It is an amenable number.

154889473 is a deficient number, since it is larger than the sum of its proper divisors (431807).

154889473 is an equidigital number, since it uses as much as digits as its factorization.

154889473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431806.

The product of its digits is 967680, while the sum is 49.

The square root of 154889473 is about 12445.4599352535. The cubic root of 154889473 is about 537.0408242160.

The spelling of 154889473 in words is "one hundred fifty-four million, eight hundred eighty-nine thousand, four hundred seventy-three".