148739617 has 8 divisors (see below), whose sum is σ = 162376424. Its totient is φ = 135416448.

The previous prime is 148739603. The next prime is 148739621. The reversal of 148739617 is 716937841.

It can be written as a sum of positive squares in 4 ways, for example, as 6677056 + 142062561 = 2584^2 + 11919^2 .

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 148739617 - 2¹⁹ = 148215329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148739317) 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, 77418 + ... + 79315.

It is an arithmetic number, because the mean of its divisors is an integer number (20297053).

Almost surely, 2^148739617 is an apocalyptic number.

It is an amenable number.

148739617 is a deficient number, since it is larger than the sum of its proper divisors (13636807).

148739617 is a wasteful number, since it uses less digits than its factorization.

148739617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156819.

The product of its digits is 254016, while the sum is 46.

The square root of 148739617 is about 12195.8852487222. The cubic root of 148739617 is about 529.8369226528.

The spelling of 148739617 in words is "one hundred forty-eight million, seven hundred thirty-nine thousand, six hundred seventeen".