1383961 has 2 divisors, whose sum is σ = 1383962. Its totient is φ = 1383960.

The previous prime is 1383959. The next prime is 1383983. The reversal of 1383961 is 1693831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 118336 = 1125^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383961 - 2¹ = 1383959 is a prime.

Together with 1383959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1383901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691980 + 691981.

It is an arithmetic number, because the mean of its divisors is an integer number (691981).

2^1383961 is an apocalyptic number.

It is an amenable number.

1383961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383961 is an equidigital number, since it uses as much as digits as its factorization.

1383961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1383961 is about 1176.4187179742. The cubic root of 1383961 is about 111.4400463277.

The spelling of 1383961 in words is "one million, three hundred eighty-three thousand, nine hundred sixty-one".