147287889 has 40 divisors (see below), whose sum is σ = 252725440. Its totient is φ = 84085776.

The previous prime is 147287887. The next prime is 147287893. The reversal of 147287889 is 988782741.

It is a happy number.

It is not a de Polignac number, because 147287889 - 2¹ = 147287887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147287887) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 137247 + ... + 138315.

It is an arithmetic number, because the mean of its divisors is an integer number (6318136).

Almost surely, 2^147287889 is an apocalyptic number.

It is an amenable number.

147287889 is a deficient number, since it is larger than the sum of its proper divisors (105437551).

147287889 is an frugal number, since it uses more digits than its factorization.

147287889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1079 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The square root of 147287889 is about 12136.2221881441. Note that the first 3 decimals coincide. The cubic root of 147287889 is about 528.1075129721.

The spelling of 147287889 in words is "one hundred forty-seven million, two hundred eighty-seven thousand, eight hundred eighty-nine".