3145999 has 4 divisors (see below), whose sum is σ = 3231064. Its totient is φ = 3060936.

The previous prime is 3145997. The next prime is 3146021. The reversal of 3145999 is 9995413.

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

It is not a de Polignac number, because 3145999 - 2¹ = 3145997 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 (3145997) by changing a digit.

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, 42477 + ... + 42550.

It is an arithmetic number, because the mean of its divisors is an integer number (807766).

Almost surely, 2^3145999 is an apocalyptic number.

3145999 is a deficient number, since it is larger than the sum of its proper divisors (85065).

3145999 is an equidigital number, since it uses as much as digits as its factorization.

3145999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85064.

The product of its digits is 43740, while the sum is 40.

The square root of 3145999 is about 1773.6964227285. The cubic root of 3145999 is about 146.5276305209.

The spelling of 3145999 in words is "three million, one hundred forty-five thousand, nine hundred ninety-nine".