3146405 has 4 divisors (see below), whose sum is σ = 3775692. Its totient is φ = 2517120.

The previous prime is 3146399. The next prime is 3146431. The reversal of 3146405 is 5046413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5046413 = 1181 ⋅4273.

It can be written as a sum of positive squares in 2 ways, for example, as 2316484 + 829921 = 1522^2 + 911^2 .

It is not a de Polignac number, because 3146405 - 2⁸ = 3146149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314636 + ... + 314645.

It is an arithmetic number, because the mean of its divisors is an integer number (943923).

Almost surely, 2^3146405 is an apocalyptic number.

It is an amenable number.

3146405 is a deficient number, since it is larger than the sum of its proper divisors (629287).

3146405 is an equidigital number, since it uses as much as digits as its factorization.

3146405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629286.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3146405 is about 1773.8108692868. The cubic root of 3146405 is about 146.5339335171.

The spelling of 3146405 in words is "three million, one hundred forty-six thousand, four hundred five".