1416440989 has 2 divisors, whose sum is σ = 1416440990. Its totient is φ = 1416440988.

The previous prime is 1416440957. The next prime is 1416441011. The reversal of 1416440989 is 9890446141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919908900 + 496532089 = 30330^2 + 22283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1416440989 - 2⁵ = 1416440957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1416440089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708220494 + 708220495.

It is an arithmetic number, because the mean of its divisors is an integer number (708220495).

Almost surely, 2^1416440989 is an apocalyptic number.

It is an amenable number.

1416440989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1416440989 is an equidigital number, since it uses as much as digits as its factorization.

1416440989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1416440989 is about 37635.6345635357. The cubic root of 1416440989 is about 1123.0510424185.

The spelling of 1416440989 in words is "one billion, four hundred sixteen million, four hundred forty thousand, nine hundred eighty-nine".