1371969 has 6 divisors (see below), whose sum is σ = 1981746. Its totient is φ = 914640.

The previous prime is 1371949. The next prime is 1371989. The reversal of 1371969 is 9691731.

It is an interprime number because it is at equal distance from previous prime (1371949) and next prime (1371989).

It can be written as a sum of positive squares in only one way, i.e., 831744 + 540225 = 912^2 + 735^2 .

It is not a de Polignac number, because 1371969 - 2⁷ = 1371841 is a prime.

It is a super-2 number, since 2×1371969² = 3764597873922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1371949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76212 + ... + 76229.

It is an arithmetic number, because the mean of its divisors is an integer number (330291).

2^1371969 is an apocalyptic number.

It is an amenable number.

1371969 is a deficient number, since it is larger than the sum of its proper divisors (609777).

1371969 is a wasteful number, since it uses less digits than its factorization.

1371969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152447 (or 152444 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1371969 is about 1171.3108041848. The cubic root of 1371969 is about 111.1172367364.

The spelling of 1371969 in words is "one million, three hundred seventy-one thousand, nine hundred sixty-nine".