148688779 has 2 divisors, whose sum is σ = 148688780. Its totient is φ = 148688778.

The previous prime is 148688747. The next prime is 148688801. The reversal of 148688779 is 977886841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148688779 - 2⁵ = 148688747 is a prime.

It is not a weakly prime, because it can be changed into another prime (148688719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74344389 + 74344390.

It is an arithmetic number, because the mean of its divisors is an integer number (74344390).

Almost surely, 2^148688779 is an apocalyptic number.

148688779 is a deficient number, since it is larger than the sum of its proper divisors (1).

148688779 is an equidigital number, since it uses as much as digits as its factorization.

148688779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 58.

The square root of 148688779 is about 12193.8008430514. The cubic root of 148688779 is about 529.7765511136.

The spelling of 148688779 in words is "one hundred forty-eight million, six hundred eighty-eight thousand, seven hundred seventy-nine".