145843847 has 4 divisors (see below), whose sum is σ = 149401056. Its totient is φ = 142286640.

The previous prime is 145843843. The next prime is 145843849. The reversal of 145843847 is 748348541.

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

It is a cyclic number.

It is not a de Polignac number, because 145843847 - 2² = 145843843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145843798 and 145843807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145843843) 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, 1778543 + ... + 1778624.

It is an arithmetic number, because the mean of its divisors is an integer number (37350264).

Almost surely, 2^145843847 is an apocalyptic number.

145843847 is a deficient number, since it is larger than the sum of its proper divisors (3557209).

145843847 is an equidigital number, since it uses as much as digits as its factorization.

145843847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557208.

The product of its digits is 430080, while the sum is 44.

The square root of 145843847 is about 12076.5825878019. The cubic root of 145843847 is about 526.3759486625.

The spelling of 145843847 in words is "one hundred forty-five million, eight hundred forty-three thousand, eight hundred forty-seven".