1439161 has 2 divisors, whose sum is σ = 1439162. Its totient is φ = 1439160.

The previous prime is 1439147. The next prime is 1439171. The reversal of 1439161 is 1619341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 160000 = 1131^2 + 400^2 .

It is an emirp because it is prime and its reverse (1619341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1439161 - 2⁵ = 1439129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1439111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719580 + 719581.

It is an arithmetic number, because the mean of its divisors is an integer number (719581).

2^1439161 is an apocalyptic number.

1439161 is the 537-th centered decagonal number.

It is an amenable number.

1439161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439161 is an equidigital number, since it uses as much as digits as its factorization.

1439161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 1439161 is about 1199.6503657316. The cubic root of 1439161 is about 112.9023878375.

It can be divided in two parts, 1439 and 161, that added together give a square (1600 = 40²).

The spelling of 1439161 in words is "one million, four hundred thirty-nine thousand, one hundred sixty-one".