7477474747 has 2 divisors, whose sum is σ = 7477474748. Its totient is φ = 7477474746.

The previous prime is 7477474727. The next prime is 7477474783. The reversal of 7477474747 is 7474747747.

It is a weak prime.

It is an emirp because it is prime and its reverse (7474747747) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7477474747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7477474691 and 7477474700.

It is not a weakly prime, because it can be changed into another prime (7477474727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3738737373 + 3738737374.

It is an arithmetic number, because the mean of its divisors is an integer number (3738737374).

Almost surely, 2^7477474747 is an apocalyptic number.

7477474747 is a deficient number, since it is larger than the sum of its proper divisors (1).

7477474747 is an equidigital number, since it uses as much as digits as its factorization.

7477474747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30118144, while the sum is 58.

The square root of 7477474747 is about 86472.3929760244. The cubic root of 7477474747 is about 1955.4722247170.

The spelling of 7477474747 in words is "seven billion, four hundred seventy-seven million, four hundred seventy-four thousand, seven hundred forty-seven".