1397999303 has 4 divisors (see below), whose sum is σ = 1400303040. Its totient is φ = 1395695568.

The previous prime is 1397999297. The next prime is 1397999387. The reversal of 1397999303 is 3039997931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3039997931 = 41 ⋅74146291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397999303 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 (1397999903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150958 + ... + 1152171.

It is an arithmetic number, because the mean of its divisors is an integer number (350075760).

Almost surely, 2^1397999303 is an apocalyptic number.

1397999303 is a deficient number, since it is larger than the sum of its proper divisors (2303737).

1397999303 is an equidigital number, since it uses as much as digits as its factorization.

1397999303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303736.

The product of its (nonzero) digits is 1240029, while the sum is 53.

The square root of 1397999303 is about 37389.8288709644. The cubic root of 1397999303 is about 1118.1557933627.

The spelling of 1397999303 in words is "one billion, three hundred ninety-seven million, nine hundred ninety-nine thousand, three hundred three".