7484409 has 12 divisors (see below), whose sum is σ = 10837476. Its totient is φ = 4977312.

The previous prime is 7484401. The next prime is 7484413. The reversal of 7484409 is 9044847.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 3980025 = 1872^2 + 1995^2 .

It is not a de Polignac number, because 7484409 - 2³ = 7484401 is a prime.

It is a Curzon number.

7484409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7484401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4267 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (903123).

Almost surely, 2^7484409 is an apocalyptic number.

It is an amenable number.

7484409 is a deficient number, since it is larger than the sum of its proper divisors (3353067).

7484409 is a wasteful number, since it uses less digits than its factorization.

7484409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 7484409 is about 2735.7647925215. The cubic root of 7484409 is about 195.6076508481.

It can be divided in two parts, 7 and 484409, that added together give a square (484416 = 696²).

The spelling of 7484409 in words is "seven million, four hundred eighty-four thousand, four hundred nine".