147941989 has 8 divisors (see below), whose sum is σ = 159799640. Its totient is φ = 136152576.

The previous prime is 147941987. The next prime is 147942001. The reversal of 147941989 is 989149741.

It can be written as a sum of positive squares in 4 ways, for example, as 10349089 + 137592900 = 3217^2 + 11730^2 .

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 147941989 - 2¹ = 147941987 is a prime.

It is a super-2 number, since 2×147941989² = 43773664218552242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147941987) 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, 12504 + ... + 21265.

It is an arithmetic number, because the mean of its divisors is an integer number (19974955).

Almost surely, 2^147941989 is an apocalyptic number.

It is an amenable number.

147941989 is a deficient number, since it is larger than the sum of its proper divisors (11857651).

147941989 is a wasteful number, since it uses less digits than its factorization.

147941989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34119.

The product of its digits is 653184, while the sum is 52.

The square root of 147941989 is about 12163.1405895024. The cubic root of 147941989 is about 528.8881271141. Note that the first 3 decimals are identical.

The spelling of 147941989 in words is "one hundred forty-seven million, nine hundred forty-one thousand, nine hundred eighty-nine".