148091289 has 4 divisors (see below), whose sum is σ = 197455056. Its totient is φ = 98727524.

The previous prime is 148091257. The next prime is 148091291. The reversal of 148091289 is 982190841.

148091289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 982190841 = 3 ⋅327396947.

It is a cyclic number.

It is not a de Polignac number, because 148091289 - 2⁵ = 148091257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 148091289.

It is not an unprimeable number, because it can be changed into a prime (148091189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24681879 + ... + 24681884.

It is an arithmetic number, because the mean of its divisors is an integer number (49363764).

Almost surely, 2^148091289 is an apocalyptic number.

It is an amenable number.

148091289 is a deficient number, since it is larger than the sum of its proper divisors (49363767).

148091289 is an equidigital number, since it uses as much as digits as its factorization.

148091289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49363766.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 148091289 is about 12169.2764369949. The cubic root of 148091289 is about 529.0659816236.

The spelling of 148091289 in words is "one hundred forty-eight million, ninety-one thousand, two hundred eighty-nine".