154297849 has 2 divisors, whose sum is σ = 154297850. Its totient is φ = 154297848.

The previous prime is 154297783. The next prime is 154297867. The reversal of 154297849 is 948792451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 13638249 = 11860^2 + 3693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154297849 is a prime.

It is not a weakly prime, because it can be changed into another prime (154291849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77148924 + 77148925.

It is an arithmetic number, because the mean of its divisors is an integer number (77148925).

Almost surely, 2^154297849 is an apocalyptic number.

It is an amenable number.

154297849 is a deficient number, since it is larger than the sum of its proper divisors (1).

154297849 is an equidigital number, since it uses as much as digits as its factorization.

154297849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 154297849 is about 12421.6685272149. The cubic root of 154297849 is about 536.3561819575.

The spelling of 154297849 in words is "one hundred fifty-four million, two hundred ninety-seven thousand, eight hundred forty-nine".