7448047749 has 24 divisors (see below), whose sum is σ = 11231251200. Its totient is φ = 4747276512.

The previous prime is 7448047687. The next prime is 7448047771. The reversal of 7448047749 is 9477408447.

It is a happy number.

It is not a de Polignac number, because 7448047749 - 2⁹ = 7448047237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7448047695 and 7448047704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7448047049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519327 + ... + 533475.

It is an arithmetic number, because the mean of its divisors is an integer number (467968800).

Almost surely, 2^7448047749 is an apocalyptic number.

It is an amenable number.

7448047749 is a deficient number, since it is larger than the sum of its proper divisors (3783203451).

7448047749 is a wasteful number, since it uses less digits than its factorization.

7448047749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16721 (or 16718 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The square root of 7448047749 is about 86302.0726807879. The cubic root of 7448047749 is about 1952.9036512867.

The spelling of 7448047749 in words is "seven billion, four hundred forty-eight million, forty-seven thousand, seven hundred forty-nine".