1386949 has 2 divisors, whose sum is σ = 1386950. Its totient is φ = 1386948.

The previous prime is 1386947. The next prime is 1386953. The reversal of 1386949 is 9496831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 216225 = 1082^2 + 465^2 .

It is an emirp because it is prime and its reverse (9496831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1386949 - 2¹ = 1386947 is a prime.

Together with 1386947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693474 + 693475.

It is an arithmetic number, because the mean of its divisors is an integer number (693475).

2^1386949 is an apocalyptic number.

It is an amenable number.

1386949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386949 is an equidigital number, since it uses as much as digits as its factorization.

1386949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 1386949 is about 1177.6879892399. The cubic root of 1386949 is about 111.5201891224.

The spelling of 1386949 in words is "one million, three hundred eighty-six thousand, nine hundred forty-nine".