1386977 has 2 divisors, whose sum is σ = 1386978. Its totient is φ = 1386976.

The previous prime is 1386953. The next prime is 1386991. The reversal of 1386977 is 7796831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1201216 + 185761 = 1096^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386977 - 2¹⁰ = 1385953 is a prime.

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, 693488 + 693489.

It is an arithmetic number, because the mean of its divisors is an integer number (693489).

2^1386977 is an apocalyptic number.

It is an amenable number.

1386977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386977 is an equidigital number, since it uses as much as digits as its factorization.

1386977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 1386977 is about 1177.6998768787. The cubic root of 1386977 is about 111.5209395812.

The spelling of 1386977 in words is "one million, three hundred eighty-six thousand, nine hundred seventy-seven".