83867149 has 2 divisors, whose sum is σ = 83867150. Its totient is φ = 83867148.

The previous prime is 83867093. The next prime is 83867191. The reversal of 83867149 is 94176838.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67947049 + 15920100 = 8243^2 + 3990^2 .

It is a cyclic number.

It is not a de Polignac number, because 83867149 - 2²¹ = 81769997 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 83867099 and 83867108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83865149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41933574 + 41933575.

It is an arithmetic number, because the mean of its divisors is an integer number (41933575).

Almost surely, 2^83867149 is an apocalyptic number.

It is an amenable number.

83867149 is a deficient number, since it is larger than the sum of its proper divisors (1).

83867149 is an equidigital number, since it uses as much as digits as its factorization.

83867149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 83867149 is about 9157.9009057753. The cubic root of 83867149 is about 437.7209098235.

The spelling of 83867149 in words is "eighty-three million, eight hundred sixty-seven thousand, one hundred forty-nine".