7474444387 has 2 divisors, whose sum is σ = 7474444388. Its totient is φ = 7474444386.

The previous prime is 7474444321. The next prime is 7474444421. The reversal of 7474444387 is 7834444747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7474444387 - 2²⁷ = 7340226659 is a prime.

It is not a weakly prime, because it can be changed into another prime (7474444487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737222193 + 3737222194.

It is an arithmetic number, because the mean of its divisors is an integer number (3737222194).

Almost surely, 2^7474444387 is an apocalyptic number.

7474444387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7474444387 is an equidigital number, since it uses as much as digits as its factorization.

7474444387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8429568, while the sum is 52.

The square root of 7474444387 is about 86454.8690762990. The cubic root of 7474444387 is about 1955.2080274358.

The spelling of 7474444387 in words is "seven billion, four hundred seventy-four million, four hundred forty-four thousand, three hundred eighty-seven".