1399489177 has 2 divisors, whose sum is σ = 1399489178. Its totient is φ = 1399489176.

The previous prime is 1399489171. The next prime is 1399489199. The reversal of 1399489177 is 7719849931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1326489241 + 72999936 = 36421^2 + 8544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399489177 - 2²³ = 1391100569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1399489171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699744588 + 699744589.

It is an arithmetic number, because the mean of its divisors is an integer number (699744589).

Almost surely, 2^1399489177 is an apocalyptic number.

It is an amenable number.

1399489177 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399489177 is an equidigital number, since it uses as much as digits as its factorization.

1399489177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 58.

The square root of 1399489177 is about 37409.7470854856. The cubic root of 1399489177 is about 1118.5528655199.

The spelling of 1399489177 in words is "one billion, three hundred ninety-nine million, four hundred eighty-nine thousand, one hundred seventy-seven".