1396543797 has 24 divisors (see below), whose sum is σ = 2202894720. Its totient is φ = 845513280.

The previous prime is 1396543793. The next prime is 1396543891. The reversal of 1396543797 is 7973456931.

It is a happy number.

1396543797 is a `hidden beast` number, since 1 + 3 + 9 + 6 + 543 + 7 + 97 = 666.

It is not a de Polignac number, because 1396543797 - 2² = 1396543793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396543793) 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, 96073 + ... + 109649.

It is an arithmetic number, because the mean of its divisors is an integer number (91787280).

Almost surely, 2^1396543797 is an apocalyptic number.

It is an amenable number.

1396543797 is a deficient number, since it is larger than the sum of its proper divisors (806350923).

1396543797 is a wasteful number, since it uses less digits than its factorization.

1396543797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14633 (or 14630 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 1396543797 is about 37370.3598724979. The cubic root of 1396543797 is about 1117.7676082377.

The spelling of 1396543797 in words is "one billion, three hundred ninety-six million, five hundred forty-three thousand, seven hundred ninety-seven".