106021849 has 2 divisors, whose sum is σ = 106021850. Its totient is φ = 106021848.

The previous prime is 106021847. The next prime is 106021901. The reversal of 106021849 is 948120601.

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., 105575625 + 446224 = 10275^2 + 668^2 .

It is an emirp because it is prime and its reverse (948120601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106021849 - 2¹ = 106021847 is a prime.

It is a super-2 number, since 2×106021849² = 22481264930757602, which contains 22 as substring.

Together with 106021847, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 106021849.

It is not a weakly prime, because it can be changed into another prime (106021847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53010924 + 53010925.

It is an arithmetic number, because the mean of its divisors is an integer number (53010925).

Almost surely, 2^106021849 is an apocalyptic number.

It is an amenable number.

106021849 is a deficient number, since it is larger than the sum of its proper divisors (1).

106021849 is an equidigital number, since it uses as much as digits as its factorization.

106021849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 106021849 is about 10296.6911675547. The cubic root of 106021849 is about 473.2948635776.

The spelling of 106021849 in words is "one hundred six million, twenty-one thousand, eight hundred forty-nine".