148438729 has 2 divisors, whose sum is σ = 148438730. Its totient is φ = 148438728.

The previous prime is 148438723. The next prime is 148438753. The reversal of 148438729 is 927834841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117614025 + 30824704 = 10845^2 + 5552^2 .

It is a cyclic number.

It is not a de Polignac number, because 148438729 - 2⁷ = 148438601 is a prime.

It is not a weakly prime, because it can be changed into another prime (148438723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74219364 + 74219365.

It is an arithmetic number, because the mean of its divisors is an integer number (74219365).

Almost surely, 2^148438729 is an apocalyptic number.

It is an amenable number.

148438729 is a deficient number, since it is larger than the sum of its proper divisors (1).

148438729 is an equidigital number, since it uses as much as digits as its factorization.

148438729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 148438729 is about 12183.5433680026. The cubic root of 148438729 is about 529.4794093127.

The spelling of 148438729 in words is "one hundred forty-eight million, four hundred thirty-eight thousand, seven hundred twenty-nine".