146947847 has 4 divisors (see below), whose sum is σ = 155591856. Its totient is φ = 138303840.

The previous prime is 146947837. The next prime is 146947849. The reversal of 146947847 is 748749641.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146947847 - 2¹⁰ = 146946823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146947795 and 146947804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146947849) 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 3 ways as a sum of consecutive naturals, for example, 4321979 + ... + 4322012.

It is an arithmetic number, because the mean of its divisors is an integer number (38897964).

Almost surely, 2^146947847 is an apocalyptic number.

146947847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

146947847 is a deficient number, since it is larger than the sum of its proper divisors (8644009).

146947847 is an equidigital number, since it uses as much as digits as its factorization.

146947847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644008.

The product of its digits is 1354752, while the sum is 50.

The square root of 146947847 is about 12122.2047087153. The cubic root of 146947847 is about 527.7007877239.

The spelling of 146947847 in words is "one hundred forty-six million, nine hundred forty-seven thousand, eight hundred forty-seven".