84214381 has 8 divisors (see below), whose sum is σ = 85951800. Its totient is φ = 82494720.

The previous prime is 84214367. The next prime is 84214397. The reversal of 84214381 is 18341248.

It can be written as a sum of positive squares in 4 ways, for example, as 19669225 + 64545156 = 4435^2 + 8034^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84214381 - 2⁵ = 84214349 is a prime.

It is a super-2 number, since 2×84214381² = 14184123934426322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84214681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361 + ... + 14041.

It is an arithmetic number, because the mean of its divisors is an integer number (10743975).

Almost surely, 2^84214381 is an apocalyptic number.

It is an amenable number.

84214381 is a deficient number, since it is larger than the sum of its proper divisors (1737419).

84214381 is a wasteful number, since it uses less digits than its factorization.

84214381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8879.

The product of its digits is 6144, while the sum is 31.

The square root of 84214381 is about 9176.8393796557. The cubic root of 84214381 is about 438.3241711698.

The spelling of 84214381 in words is "eighty-four million, two hundred fourteen thousand, three hundred eighty-one".