7444744081 has 4 divisors (see below), whose sum is σ = 7444966912. Its totient is φ = 7444521252.

The previous prime is 7444744039. The next prime is 7444744127. The reversal of 7444744081 is 1804474447.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1804474447 = 3931 ⋅459037.

It is a cyclic number.

It is not a de Polignac number, because 7444744081 - 2¹⁹ = 7444219793 is a prime.

It is a super-2 number, since 2×7444744081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7444747081) 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, 50025 + ... + 131878.

It is an arithmetic number, because the mean of its divisors is an integer number (1861241728).

Almost surely, 2^7444744081 is an apocalyptic number.

It is an amenable number.

7444744081 is a deficient number, since it is larger than the sum of its proper divisors (222831).

7444744081 is a wasteful number, since it uses less digits than its factorization.

7444744081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222830.

The product of its (nonzero) digits is 401408, while the sum is 43.

The square root of 7444744081 is about 86282.9304150016. The cubic root of 7444744081 is about 1952.6148642260.

The spelling of 7444744081 in words is "seven billion, four hundred forty-four million, seven hundred forty-four thousand, eighty-one".