1380629 has 2 divisors, whose sum is σ = 1380630. Its totient is φ = 1380628.

The previous prime is 1380623. The next prime is 1380637. The reversal of 1380629 is 9260831.

1380629 is nontrivially palindromic in base 2 and base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 4 = 1175^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380629 - 2¹² = 1376533 is a prime.

It is a super-2 number, since 2×1380629² = 3812272871282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690314 + 690315.

It is an arithmetic number, because the mean of its divisors is an integer number (690315).

2^1380629 is an apocalyptic number.

It is an amenable number.

1380629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380629 is an equidigital number, since it uses as much as digits as its factorization.

1380629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1380629 is about 1175.0017021264. The cubic root of 1380629 is about 111.3505407645.

The spelling of 1380629 in words is "one million, three hundred eighty thousand, six hundred twenty-nine".