1397003817 has 16 divisors (see below), whose sum is σ = 2036201472. Its totient is φ = 844920720.

The previous prime is 1397003813. The next prime is 1397003827. The reversal of 1397003817 is 7183007931.

It is a happy number.

It is not a de Polignac number, because 1397003817 - 2² = 1397003813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397003813) 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 15 ways as a sum of consecutive naturals, for example, 27393 + ... + 59534.

It is an arithmetic number, because the mean of its divisors is an integer number (127262592).

Almost surely, 2^1397003817 is an apocalyptic number.

It is an amenable number.

1397003817 is a deficient number, since it is larger than the sum of its proper divisors (639197655).

1397003817 is a wasteful number, since it uses less digits than its factorization.

1397003817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87428.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 1397003817 is about 37376.5142435728. The cubic root of 1397003817 is about 1117.8903252405.

The spelling of 1397003817 in words is "one billion, three hundred ninety-seven million, three thousand, eight hundred seventeen".