2404945 has 4 divisors (see below), whose sum is σ = 2885940. Its totient is φ = 1923952.

The previous prime is 2404933. The next prime is 2404957. The reversal of 2404945 is 5494042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5494042 = 2 ⋅2747021.

It is an interprime number because it is at equal distance from previous prime (2404933) and next prime (2404957).

It can be written as a sum of positive squares in 2 ways, for example, as 1308736 + 1096209 = 1144^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 2404945 - 2¹⁹ = 1880657 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240490 + ... + 240499.

It is an arithmetic number, because the mean of its divisors is an integer number (721485).

2^2404945 is an apocalyptic number.

It is an amenable number.

2404945 is a deficient number, since it is larger than the sum of its proper divisors (480995).

2404945 is an equidigital number, since it uses as much as digits as its factorization.

2404945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480994.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2404945 is about 1550.7885091140. The cubic root of 2404945 is about 133.9784809879.

Adding to 2404945 its reverse (5494042), we get a palindrome (7898987).

The spelling of 2404945 in words is "two million, four hundred four thousand, nine hundred forty-five".