148272389 has 4 divisors (see below), whose sum is σ = 153385260. Its totient is φ = 143159520.

The previous prime is 148272367. The next prime is 148272391. The reversal of 148272389 is 983272841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983272841 = 1019 ⋅964939.

It can be written as a sum of positive squares in 2 ways, for example, as 107848225 + 40424164 = 10385^2 + 6358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148272389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148275389) 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, 2556392 + ... + 2556449.

It is an arithmetic number, because the mean of its divisors is an integer number (38346315).

Almost surely, 2^148272389 is an apocalyptic number.

It is an amenable number.

148272389 is a deficient number, since it is larger than the sum of its proper divisors (5112871).

148272389 is an equidigital number, since it uses as much as digits as its factorization.

148272389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112870.

The product of its digits is 193536, while the sum is 44.

The square root of 148272389 is about 12176.7150332099. The cubic root of 148272389 is about 529.2815577044.

The spelling of 148272389 in words is "one hundred forty-eight million, two hundred seventy-two thousand, three hundred eighty-nine".