148877009 has 2 divisors, whose sum is σ = 148877010. Its totient is φ = 148877008.

The previous prime is 148876997. The next prime is 148877023. The reversal of 148877009 is 900778841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122323600 + 26553409 = 11060^2 + 5153^2 .

It is a cyclic number.

It is not a de Polignac number, because 148877009 - 2²⁰ = 147828433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148877089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74438504 + 74438505.

It is an arithmetic number, because the mean of its divisors is an integer number (74438505).

Almost surely, 2^148877009 is an apocalyptic number.

It is an amenable number.

148877009 is a deficient number, since it is larger than the sum of its proper divisors (1).

148877009 is an equidigital number, since it uses as much as digits as its factorization.

148877009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 148877009 is about 12201.5166680212. The cubic root of 148877009 is about 530.0000106800. Note that the first 4 decimals are identical.

The spelling of 148877009 in words is "one hundred forty-eight million, eight hundred seventy-seven thousand, nine".