1399141997 has 6 divisors (see below), whose sum is σ = 1537900014. Its totient is φ = 1271947160.

The previous prime is 1399141987. The next prime is 1399142027. The reversal of 1399141997 is 7991419931.

It can be written as a sum of positive squares in only one way, i.e., 1203673636 + 195468361 = 34694^2 + 13981^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1399141997 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 (1399141907) 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 5 ways as a sum of consecutive naturals, for example, 5781458 + ... + 5781699.

It is an arithmetic number, because the mean of its divisors is an integer number (256316669).

Almost surely, 2^1399141997 is an apocalyptic number.

It is an amenable number.

1399141997 is a deficient number, since it is larger than the sum of its proper divisors (138758017).

1399141997 is a wasteful number, since it uses less digits than its factorization.

1399141997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563179 (or 11563168 counting only the distinct ones).

The product of its digits is 551124, while the sum is 53.

The square root of 1399141997 is about 37405.1065631419. The cubic root of 1399141997 is about 1118.4603624107.

The spelling of 1399141997 in words is "one billion, three hundred ninety-nine million, one hundred forty-one thousand, nine hundred ninety-seven".