1371397847 has 2 divisors, whose sum is σ = 1371397848. Its totient is φ = 1371397846.

The previous prime is 1371397831. The next prime is 1371397877. The reversal of 1371397847 is 7487931731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1371397847 - 2⁴ = 1371397831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1371397795 and 1371397804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371397877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685698923 + 685698924.

It is an arithmetic number, because the mean of its divisors is an integer number (685698924).

Almost surely, 2^1371397847 is an apocalyptic number.

1371397847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371397847 is an equidigital number, since it uses as much as digits as its factorization.

1371397847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 1371397847 is about 37032.3891613814. The cubic root of 1371397847 is about 1111.0181516536.

The spelling of 1371397847 in words is "one billion, three hundred seventy-one million, three hundred ninety-seven thousand, eight hundred forty-seven".