148402909 has 2 divisors, whose sum is σ = 148402910. Its totient is φ = 148402908.

The previous prime is 148402907. The next prime is 148402927. The reversal of 148402909 is 909204841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148303684 + 99225 = 12178^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 148402909 - 2¹ = 148402907 is a prime.

Together with 148402907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148402907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74201454 + 74201455.

It is an arithmetic number, because the mean of its divisors is an integer number (74201455).

Almost surely, 2^148402909 is an apocalyptic number.

It is an amenable number.

148402909 is a deficient number, since it is larger than the sum of its proper divisors (1).

148402909 is an equidigital number, since it uses as much as digits as its factorization.

148402909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 148402909 is about 12182.0732636116. The cubic root of 148402909 is about 529.4368160300.

The spelling of 148402909 in words is "one hundred forty-eight million, four hundred two thousand, nine hundred nine".