1371949 has 2 divisors, whose sum is σ = 1371950. Its totient is φ = 1371948.

The previous prime is 1371947. The next prime is 1371989. The reversal of 1371949 is 9491731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 381924 = 995^2 + 618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371949 - 2¹ = 1371947 is a prime.

Together with 1371947, 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 (1371943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685974 + 685975.

It is an arithmetic number, because the mean of its divisors is an integer number (685975).

2^1371949 is an apocalyptic number.

It is an amenable number.

1371949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371949 is an equidigital number, since it uses as much as digits as its factorization.

1371949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 1371949 is about 1171.3022667100. The cubic root of 1371949 is about 111.1166967933.

The spelling of 1371949 in words is "one million, three hundred seventy-one thousand, nine hundred forty-nine".