147844477 has 4 divisors (see below), whose sum is σ = 161284896. Its totient is φ = 134404060.

The previous prime is 147844447. The next prime is 147844481. The reversal of 147844477 is 774448741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147844477 - 2¹⁹ = 147320189 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 (147844447) 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 3 ways as a sum of consecutive naturals, for example, 6720193 + ... + 6720214.

It is an arithmetic number, because the mean of its divisors is an integer number (40321224).

Almost surely, 2^147844477 is an apocalyptic number.

It is an amenable number.

147844477 is a deficient number, since it is larger than the sum of its proper divisors (13440419).

147844477 is a wasteful number, since it uses less digits than its factorization.

147844477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13440418.

The product of its digits is 702464, while the sum is 46.

The square root of 147844477 is about 12159.1314245714. The cubic root of 147844477 is about 528.7719007596.

The spelling of 147844477 in words is "one hundred forty-seven million, eight hundred forty-four thousand, four hundred seventy-seven".