7440001 has 4 divisors (see below), whose sum is σ = 7831600. Its totient is φ = 7048404.

The previous prime is 7439977. The next prime is 7440011. The reversal of 7440001 is 1000447.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7440001 is a prime.

It is a super-2 number, since 2×7440001² = 110707229760002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7440011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195771 + ... + 195808.

It is an arithmetic number, because the mean of its divisors is an integer number (1957900).

Almost surely, 2^7440001 is an apocalyptic number.

It is an amenable number.

7440001 is a deficient number, since it is larger than the sum of its proper divisors (391599).

7440001 is a wasteful number, since it uses less digits than its factorization.

7440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391598.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7440001 is about 2727.6365227061. The cubic root of 7440001 is about 195.2200102801.

Adding to 7440001 its reverse (1000447), we get a palindrome (8440448).

The spelling of 7440001 in words is "seven million, four hundred forty thousand, one".