7474444321 has 2 divisors, whose sum is σ = 7474444322. Its totient is φ = 7474444320.

The previous prime is 7474444277. The next prime is 7474444387. The reversal of 7474444321 is 1234444747.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5888413696 + 1586030625 = 76736^2 + 39825^2 .

It is a cyclic number.

It is not a de Polignac number, because 7474444321 - 2¹⁹ = 7473920033 is a prime.

It is not a weakly prime, because it can be changed into another prime (7474444121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737222160 + 3737222161.

It is an arithmetic number, because the mean of its divisors is an integer number (3737222161).

Almost surely, 2^7474444321 is an apocalyptic number.

It is an amenable number.

7474444321 is a deficient number, since it is larger than the sum of its proper divisors (1).

7474444321 is an equidigital number, since it uses as much as digits as its factorization.

7474444321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 40.

The square root of 7474444321 is about 86454.8686945970. The cubic root of 7474444321 is about 1955.2080216809.

The spelling of 7474444321 in words is "seven billion, four hundred seventy-four million, four hundred forty-four thousand, three hundred twenty-one".