7440343 has 8 divisors (see below), whose sum is σ = 7876400. Its totient is φ = 7008768.

The previous prime is 7440319. The next prime is 7440347. The reversal of 7440343 is 3430447.

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

It is a 9-Lehmer number, since φ(7440343) divides (7440343-1)⁹.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7440343 is a prime.

It is a Duffinian number.

7440343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653 + ... + 4681.

It is an arithmetic number, because the mean of its divisors is an integer number (984550).

Almost surely, 2^7440343 is an apocalyptic number.

7440343 is a deficient number, since it is larger than the sum of its proper divisors (436057).

7440343 is a wasteful number, since it uses less digits than its factorization.

7440343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 7440343 is about 2727.6992136231. The cubic root of 7440343 is about 195.2230015082.

The spelling of 7440343 in words is "seven million, four hundred forty thousand, three hundred forty-three".