154424009 has 2 divisors, whose sum is σ = 154424010. Its totient is φ = 154424008.

The previous prime is 154423993. The next prime is 154424021. The reversal of 154424009 is 900424451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150601984 + 3822025 = 12272^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 154424009 - 2⁴ = 154423993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (154424059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77212004 + 77212005.

It is an arithmetic number, because the mean of its divisors is an integer number (77212005).

Almost surely, 2^154424009 is an apocalyptic number.

It is an amenable number.

154424009 is a deficient number, since it is larger than the sum of its proper divisors (1).

154424009 is an equidigital number, since it uses as much as digits as its factorization.

154424009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 154424009 is about 12426.7457123738. The cubic root of 154424009 is about 536.5023241156.

The spelling of 154424009 in words is "one hundred fifty-four million, four hundred twenty-four thousand, nine".