146439647 has 8 divisors (see below), whose sum is σ = 152882400. Its totient is φ = 140089824.

The previous prime is 146439641. The next prime is 146439653. The reversal of 146439647 is 746934641.

It is an interprime number because it is at equal distance from previous prime (146439641) and next prime (146439653).

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 146439647 - 2¹⁰ = 146438623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146439598 and 146439607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146439641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20003 + ... + 26324.

It is an arithmetic number, because the mean of its divisors is an integer number (19110300).

Almost surely, 2^146439647 is an apocalyptic number.

146439647 is a deficient number, since it is larger than the sum of its proper divisors (6442753).

146439647 is a wasteful number, since it uses less digits than its factorization.

146439647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46465.

The product of its digits is 435456, while the sum is 44.

The square root of 146439647 is about 12101.2250206332. The cubic root of 146439647 is about 527.0917569384.

The spelling of 146439647 in words is "one hundred forty-six million, four hundred thirty-nine thousand, six hundred forty-seven".