154444449 has 16 divisors (see below), whose sum is σ = 213073920. Its totient is φ = 99404880.

The previous prime is 154444399. The next prime is 154444457. The reversal of 154444449 is 944444451.

It is a happy number.

It is not a de Polignac number, because 154444449 - 2⁷ = 154444321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154444469) 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, 42814 + ... + 46280.

It is an arithmetic number, because the mean of its divisors is an integer number (13317120).

Almost surely, 2^154444449 is an apocalyptic number.

It is an amenable number.

154444449 is a deficient number, since it is larger than the sum of its proper divisors (58629471).

154444449 is a wasteful number, since it uses less digits than its factorization.

154444449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980.

The product of its digits is 184320, while the sum is 39.

The square root of 154444449 is about 12427.5681048224. The cubic root of 154444449 is about 536.5259940613.

The spelling of 154444449 in words is "one hundred fifty-four million, four hundred forty-four thousand, four hundred forty-nine".