1399283943 has 16 divisors (see below), whose sum is σ = 1915779840. Its totient is φ = 908129664.

The previous prime is 1399283939. The next prime is 1399283947. The reversal of 1399283943 is 3493829931.

It is an interprime number because it is at equal distance from previous prime (1399283939) and next prime (1399283947).

It is not a de Polignac number, because 1399283943 - 2² = 1399283939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399283947) 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 15 ways as a sum of consecutive naturals, for example, 20146 + ... + 56607.

It is an arithmetic number, because the mean of its divisors is an integer number (119736240).

Almost surely, 2^1399283943 is an apocalyptic number.

1399283943 is a deficient number, since it is larger than the sum of its proper divisors (516495897).

1399283943 is a wasteful number, since it uses less digits than its factorization.

1399283943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76918.

The product of its digits is 1259712, while the sum is 51.

The square root of 1399283943 is about 37407.0039297456. The cubic root of 1399283943 is about 1118.4981845441.

The spelling of 1399283943 in words is "one billion, three hundred ninety-nine million, two hundred eighty-three thousand, nine hundred forty-three".