1376449 has 2 divisors, whose sum is σ = 1376450. Its totient is φ = 1376448.

The previous prime is 1376447. The next prime is 1376461. The reversal of 1376449 is 9446731.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 294849 = 1040^2 + 543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376449 - 2¹ = 1376447 is a prime.

It is a super-2 number, since 2×1376449² = 3789223699202, which contains 22 as substring.

Together with 1376447, it forms a pair of twin primes.

It is an Ulam number.

1376449 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1376443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688224 + 688225.

It is an arithmetic number, because the mean of its divisors is an integer number (688225).

2^1376449 is an apocalyptic number.

It is an amenable number.

1376449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376449 is an equidigital number, since it uses as much as digits as its factorization.

1376449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 1376449 is about 1173.2216329407. The cubic root of 1376449 is about 111.2380519930.

The spelling of 1376449 in words is "one million, three hundred seventy-six thousand, four hundred forty-nine".