7478449387 has 2 divisors, whose sum is σ = 7478449388. Its totient is φ = 7478449386.

The previous prime is 7478449351. The next prime is 7478449403. The reversal of 7478449387 is 7839448747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7478449387 - 2⁷ = 7478449259 is a prime.

It is not a weakly prime, because it can be changed into another prime (7478449687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739224693 + 3739224694.

It is an arithmetic number, because the mean of its divisors is an integer number (3739224694).

Almost surely, 2^7478449387 is an apocalyptic number.

7478449387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478449387 is an equidigital number, since it uses as much as digits as its factorization.

7478449387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 61.

The square root of 7478449387 is about 86478.0283482458. The cubic root of 7478449387 is about 1955.5571820372.

The spelling of 7478449387 in words is "seven billion, four hundred seventy-eight million, four hundred forty-nine thousand, three hundred eighty-seven".