1396845197 has 4 divisors (see below), whose sum is σ = 1523831136. Its totient is φ = 1269859260.

The previous prime is 1396845193. The next prime is 1396845199. The reversal of 1396845197 is 7915486931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7915486931 = 11 ⋅719589721.

It is a cyclic number.

It is not a de Polignac number, because 1396845197 - 2² = 1396845193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396845193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63492953 + ... + 63492974.

It is an arithmetic number, because the mean of its divisors is an integer number (380957784).

Almost surely, 2^1396845197 is an apocalyptic number.

It is an amenable number.

1396845197 is a deficient number, since it is larger than the sum of its proper divisors (126985939).

1396845197 is a wasteful number, since it uses less digits than its factorization.

1396845197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126985938.

The product of its digits is 1632960, while the sum is 53.

The square root of 1396845197 is about 37374.3922626175. The cubic root of 1396845197 is about 1117.8480140998.

The spelling of 1396845197 in words is "one billion, three hundred ninety-six million, eight hundred forty-five thousand, one hundred ninety-seven".