154884449 has 2 divisors, whose sum is σ = 154884450. Its totient is φ = 154884448.

The previous prime is 154884439. The next prime is 154884451. The reversal of 154884449 is 944488451.

154884449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145926400 + 8958049 = 12080^2 + 2993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154884449 is a prime.

Together with 154884451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154884439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77442224 + 77442225.

It is an arithmetic number, because the mean of its divisors is an integer number (77442225).

Almost surely, 2^154884449 is an apocalyptic number.

It is an amenable number.

154884449 is a deficient number, since it is larger than the sum of its proper divisors (1).

154884449 is an equidigital number, since it uses as much as digits as its factorization.

154884449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 47.

The square root of 154884449 is about 12445.2580929445. The cubic root of 154884449 is about 537.0350176620.

The spelling of 154884449 in words is "one hundred fifty-four million, eight hundred eighty-four thousand, four hundred forty-nine".