83444489 has 2 divisors, whose sum is σ = 83444490. Its totient is φ = 83444488.

The previous prime is 83444479. The next prime is 83444497. The reversal of 83444489 is 98444438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80910025 + 2534464 = 8995^2 + 1592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83444489 is a prime.

It is a super-2 number, since 2×83444489² = 13925965488942242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83444429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41722244 + 41722245.

It is an arithmetic number, because the mean of its divisors is an integer number (41722245).

Almost surely, 2^83444489 is an apocalyptic number.

It is an amenable number.

83444489 is a deficient number, since it is larger than the sum of its proper divisors (1).

83444489 is an equidigital number, since it uses as much as digits as its factorization.

83444489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 44.

The square root of 83444489 is about 9134.7955094791. The cubic root of 83444489 is about 436.9843529212.

The spelling of 83444489 in words is "eighty-three million, four hundred forty-four thousand, four hundred eighty-nine".