147478805 has 6 divisors (see below), whose sum is σ = 177007158. Its totient is φ = 117961320.

The previous prime is 147478801. The next prime is 147478841. The reversal of 147478805 is 508874741.

It can be written as a sum of positive squares in only one way, i.e., 117983044 + 29495761 = 10862^2 + 5431^2 .

It is not a de Polignac number, because 147478805 - 2² = 147478801 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 (147478801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24440 + ... + 29870.

It is an arithmetic number, because the mean of its divisors is an integer number (29501193).

Almost surely, 2^147478805 is an apocalyptic number.

It is an amenable number.

147478805 is a deficient number, since it is larger than the sum of its proper divisors (29528353).

147478805 is an frugal number, since it uses more digits than its factorization.

147478805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10867 (or 5436 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 147478805 is about 12144.0851858014. The cubic root of 147478805 is about 528.3355938254.

Multiplying 147478805 by its product of nonzero digits (250880), we get a square (36999482598400 = 6082720²).

The spelling of 147478805 in words is "one hundred forty-seven million, four hundred seventy-eight thousand, eight hundred five".