1383897397 has 2 divisors, whose sum is σ = 1383897398. Its totient is φ = 1383897396.

The previous prime is 1383897379. The next prime is 1383897409. The reversal of 1383897397 is 7937983831.

Together with previous prime (1383897379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316673796 + 67223601 = 36286^2 + 8199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1383897397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1383892397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691948698 + 691948699.

It is an arithmetic number, because the mean of its divisors is an integer number (691948699).

Almost surely, 2^1383897397 is an apocalyptic number.

It is an amenable number.

1383897397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383897397 is an equidigital number, since it uses as much as digits as its factorization.

1383897397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 58.

The square root of 1383897397 is about 37200.7714570545. The cubic root of 1383897397 is about 1114.3833914336.

The spelling of 1383897397 in words is "one billion, three hundred eighty-three million, eight hundred ninety-seven thousand, three hundred ninety-seven".