154449929 has 6 divisors (see below), whose sum is σ = 155018910. Its totient is φ = 153882560.

The previous prime is 154449871. The next prime is 154449931. The reversal of 154449929 is 929944451.

It can be written as a sum of positive squares in 3 ways, for example, as 19600 + 154430329 = 140^2 + 12427^2 .

It is a de Polignac number, because none of the positive numbers 2^k-154449929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154449949) 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 5 ways as a sum of consecutive naturals, for example, 271157 + ... + 271725.

It is an arithmetic number, because the mean of its divisors is an integer number (25836485).

Almost surely, 2^154449929 is an apocalyptic number.

It is an amenable number.

154449929 is a deficient number, since it is larger than the sum of its proper divisors (568981).

154449929 is an frugal number, since it uses more digits than its factorization.

154449929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1090 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 154449929 is about 12427.7885804354. The cubic root of 154449929 is about 536.5323396604.

The spelling of 154449929 in words is "one hundred fifty-four million, four hundred forty-nine thousand, nine hundred twenty-nine".