1377983 has 2 divisors, whose sum is σ = 1377984. Its totient is φ = 1377982.

The previous prime is 1377977. The next prime is 1378001. The reversal of 1377983 is 3897731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1377983 - 2⁴ = 1377967 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688991 + 688992.

It is an arithmetic number, because the mean of its divisors is an integer number (688992).

2^1377983 is an apocalyptic number.

1377983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377983 is an equidigital number, since it uses as much as digits as its factorization.

1377983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 1377983 is about 1173.8752063145. The cubic root of 1377983 is about 111.2793601758.

The spelling of 1377983 in words is "one million, three hundred seventy-seven thousand, nine hundred eighty-three".