1442715689 has 2 divisors, whose sum is σ = 1442715690. Its totient is φ = 1442715688.

The previous prime is 1442715683. The next prime is 1442715719. The reversal of 1442715689 is 9865172441.

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., 1026882025 + 415833664 = 32045^2 + 20392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442715689 - 2²⁰ = 1441667113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442715683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721357844 + 721357845.

It is an arithmetic number, because the mean of its divisors is an integer number (721357845).

Almost surely, 2^1442715689 is an apocalyptic number.

It is an amenable number.

1442715689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442715689 is an equidigital number, since it uses as much as digits as its factorization.

1442715689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 1442715689 is about 37983.0974118752. The cubic root of 1442715689 is about 1129.9526669813.

The spelling of 1442715689 in words is "one billion, four hundred forty-two million, seven hundred fifteen thousand, six hundred eighty-nine".