1397214047 has 4 divisors (see below), whose sum is σ = 1418068056. Its totient is φ = 1376360040.

The previous prime is 1397213957. The next prime is 1397214053. The reversal of 1397214047 is 7404127931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1397214047 - 2²⁰ = 1396165471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1397214047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397214347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10426904 + ... + 10427037.

It is an arithmetic number, because the mean of its divisors is an integer number (354517014).

Almost surely, 2^1397214047 is an apocalyptic number.

1397214047 is a deficient number, since it is larger than the sum of its proper divisors (20854009).

1397214047 is an equidigital number, since it uses as much as digits as its factorization.

1397214047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20854008.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1397214047 is about 37379.3264653070. The cubic root of 1397214047 is about 1117.9463981713.

The spelling of 1397214047 in words is "one billion, three hundred ninety-seven million, two hundred fourteen thousand, forty-seven".