148269409 has 4 divisors (see below), whose sum is σ = 148365360. Its totient is φ = 148173460.

The previous prime is 148269403. The next prime is 148269421. The reversal of 148269409 is 904962841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904962841 = 103 ⋅8786047.

It is a cyclic number.

It is not a de Polignac number, because 148269409 - 2⁷ = 148269281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148269403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45619 + ... + 48760.

It is an arithmetic number, because the mean of its divisors is an integer number (37091340).

Almost surely, 2^148269409 is an apocalyptic number.

It is an amenable number.

148269409 is a deficient number, since it is larger than the sum of its proper divisors (95951).

148269409 is an equidigital number, since it uses as much as digits as its factorization.

148269409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95950.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 148269409 is about 12176.5926679018. The cubic root of 148269409 is about 529.2780118214.

The spelling of 148269409 in words is "one hundred forty-eight million, two hundred sixty-nine thousand, four hundred nine".