2940405 has 32 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 1360896.

The previous prime is 2940401. The next prime is 2940407. The reversal of 2940405 is 5040492.

It is not a de Polignac number, because 2940405 - 2² = 2940401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2940401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2872 + ... + 3758.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2^2940405 is an apocalyptic number.

It is an amenable number.

2940405 is a deficient number, since it is larger than the sum of its proper divisors (2430219).

2940405 is a wasteful number, since it uses less digits than its factorization.

2940405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2940405 is about 1714.7609162796. The cubic root of 2940405 is about 143.2635529575.

Adding to 2940405 its reverse (5040492), we get a palindrome (7980897).

The spelling of 2940405 in words is "two million, nine hundred forty thousand, four hundred five".