148400729 has 8 divisors (see below), whose sum is σ = 150157800. Its totient is φ = 146653696.

The previous prime is 148400717. The next prime is 148400737. The reversal of 148400729 is 927004841.

It can be written as a sum of positive squares in 4 ways, for example, as 46895104 + 101505625 = 6848^2 + 10075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148400729 - 2⁴ = 148400713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148402729) 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 7 ways as a sum of consecutive naturals, for example, 29597 + ... + 34245.

It is an arithmetic number, because the mean of its divisors is an integer number (18769725).

Almost surely, 2^148400729 is an apocalyptic number.

It is an amenable number.

148400729 is a deficient number, since it is larger than the sum of its proper divisors (1757071).

148400729 is a wasteful number, since it uses less digits than its factorization.

148400729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 148400729 is about 12181.9837875446. The cubic root of 148400729 is about 529.4342235878.

The spelling of 148400729 in words is "one hundred forty-eight million, four hundred thousand, seven hundred twenty-nine".