2945931 has 8 divisors (see below), whose sum is σ = 4134720. Its totient is φ = 1860552.

The previous prime is 2945869. The next prime is 2945933. The reversal of 2945931 is 1395492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2945931 - 2¹⁸ = 2683787 is a prime.

It is a super-4 number, since 4×2945931⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2945892 and 2945901.

It is not an unprimeable number, because it can be changed into a prime (2945933) 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 7 ways as a sum of consecutive naturals, for example, 25785 + ... + 25898.

It is an arithmetic number, because the mean of its divisors is an integer number (516840).

2^2945931 is an apocalyptic number.

2945931 is a deficient number, since it is larger than the sum of its proper divisors (1188789).

2945931 is a wasteful number, since it uses less digits than its factorization.

2945931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51705.

The product of its digits is 9720, while the sum is 33.

The square root of 2945931 is about 1716.3714632911. The cubic root of 2945931 is about 143.3532434334.

The spelling of 2945931 in words is "two million, nine hundred forty-five thousand, nine hundred thirty-one".