1377359449 has 2 divisors, whose sum is σ = 1377359450. Its totient is φ = 1377359448.

The previous prime is 1377359429. The next prime is 1377359471. The reversal of 1377359449 is 9449537731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793267225 + 584092224 = 28165^2 + 24168^2 .

It is an emirp because it is prime and its reverse (9449537731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377359449 - 2²⁵ = 1343805017 is a prime.

It is a super-4 number, since 4×1377359449⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1377359396 and 1377359405.

It is not a weakly prime, because it can be changed into another prime (1377359429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688679724 + 688679725.

It is an arithmetic number, because the mean of its divisors is an integer number (688679725).

Almost surely, 2^1377359449 is an apocalyptic number.

It is an amenable number.

1377359449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377359449 is an equidigital number, since it uses as much as digits as its factorization.

1377359449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 52.

The square root of 1377359449 is about 37112.7936027457. The cubic root of 1377359449 is about 1112.6257263791.

The spelling of 1377359449 in words is "one billion, three hundred seventy-seven million, three hundred fifty-nine thousand, four hundred forty-nine".