147857789 has 8 divisors (see below), whose sum is σ = 157518720. Its totient is φ = 138303936.

The previous prime is 147857771. The next prime is 147857803. The reversal of 147857789 is 987758741.

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 147857789 - 2²⁰ = 146809213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147857089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23909 + ... + 29450.

It is an arithmetic number, because the mean of its divisors is an integer number (19689840).

Almost surely, 2^147857789 is an apocalyptic number.

It is an amenable number.

147857789 is a deficient number, since it is larger than the sum of its proper divisors (9660931).

147857789 is a wasteful number, since it uses less digits than its factorization.

147857789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53539.

The product of its digits is 3951360, while the sum is 56.

The square root of 147857789 is about 12159.6788197715. The cubic root of 147857789 is about 528.7877705899.

The spelling of 147857789 in words is "one hundred forty-seven million, eight hundred fifty-seven thousand, seven hundred eighty-nine".