148479689 has 2 divisors, whose sum is σ = 148479690. Its totient is φ = 148479688.

The previous prime is 148479647. The next prime is 148479701. The reversal of 148479689 is 986974841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102171664 + 46308025 = 10108^2 + 6805^2 .

It is an emirp because it is prime and its reverse (986974841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148479689 - 2²⁰ = 147431113 is a prime.

It is not a weakly prime, because it can be changed into another prime (148479619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74239844 + 74239845.

It is an arithmetic number, because the mean of its divisors is an integer number (74239845).

Almost surely, 2^148479689 is an apocalyptic number.

It is an amenable number.

148479689 is a deficient number, since it is larger than the sum of its proper divisors (1).

148479689 is an equidigital number, since it uses as much as digits as its factorization.

148479689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 56.

The square root of 148479689 is about 12185.2242080316. The cubic root of 148479689 is about 529.5281061324.

The spelling of 148479689 in words is "one hundred forty-eight million, four hundred seventy-nine thousand, six hundred eighty-nine".