154494449 has 2 divisors, whose sum is σ = 154494450. Its totient is φ = 154494448.

The previous prime is 154494401. The next prime is 154494451. The reversal of 154494449 is 944494451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153760000 + 734449 = 12400^2 + 857^2 .

It is a cyclic number.

It is not a de Polignac number, because 154494449 - 2¹² = 154490353 is a prime.

Together with 154494451, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8682785 and since 154494449 and 8682785 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (154494649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77247224 + 77247225.

It is an arithmetic number, because the mean of its divisors is an integer number (77247225).

Almost surely, 2^154494449 is an apocalyptic number.

It is an amenable number.

154494449 is a deficient number, since it is larger than the sum of its proper divisors (1).

154494449 is an equidigital number, since it uses as much as digits as its factorization.

154494449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 154494449 is about 12429.5795986831. The cubic root of 154494449 is about 536.5838863013.

The spelling of 154494449 in words is "one hundred fifty-four million, four hundred ninety-four thousand, four hundred forty-nine".