7894424447 has 12 divisors (see below), whose sum is σ = 9889719336. Its totient is φ = 6246137520.

The previous prime is 7894424441. The next prime is 7894424471. The reversal of 7894424447 is 7444244987.

It is a de Polignac number, because none of the positive numbers 2^k-7894424447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7894424441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6195929 + ... + 6197202.

It is an arithmetic number, because the mean of its divisors is an integer number (824143278).

Almost surely, 2^7894424447 is an apocalyptic number.

7894424447 is a deficient number, since it is larger than the sum of its proper divisors (1995294889).

7894424447 is a wasteful number, since it uses less digits than its factorization.

7894424447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12393158 (or 12393151 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 53.

The square root of 7894424447 is about 88850.5737010178. The cubic root of 7894424447 is about 1991.1630489054.

The spelling of 7894424447 in words is "seven billion, eight hundred ninety-four million, four hundred twenty-four thousand, four hundred forty-seven".