84334381 has 2 divisors, whose sum is σ = 84334382. Its totient is φ = 84334380.

The previous prime is 84334361. The next prime is 84334427. The reversal of 84334381 is 18343348.

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., 77264100 + 7070281 = 8790^2 + 2659^2 .

It is a cyclic number.

It is not a de Polignac number, because 84334381 - 2¹³ = 84326189 is a prime.

It is a super-2 number, since 2×84334381² = 14224575637306322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84334301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42167190 + 42167191.

It is an arithmetic number, because the mean of its divisors is an integer number (42167191).

Almost surely, 2^84334381 is an apocalyptic number.

It is an amenable number.

84334381 is a deficient number, since it is larger than the sum of its proper divisors (1).

84334381 is an equidigital number, since it uses as much as digits as its factorization.

84334381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 84334381 is about 9183.3752509630. The cubic root of 84334381 is about 438.5322668115.

The spelling of 84334381 in words is "eighty-four million, three hundred thirty-four thousand, three hundred eighty-one".