84381253 has 4 divisors (see below), whose sum is σ = 92052288. Its totient is φ = 76710220.

The previous prime is 84381229. The next prime is 84381257. The reversal of 84381253 is 35218348.

It is a happy number.

84381253 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84381253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84381257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835501 + ... + 3835522.

It is an arithmetic number, because the mean of its divisors is an integer number (23013072).

Almost surely, 2^84381253 is an apocalyptic number.

It is an amenable number.

84381253 is a deficient number, since it is larger than the sum of its proper divisors (7671035).

84381253 is a wasteful number, since it uses less digits than its factorization.

84381253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7671034.

The product of its digits is 23040, while the sum is 34.

The square root of 84381253 is about 9185.9268993390. The cubic root of 84381253 is about 438.6134953579.

The spelling of 84381253 in words is "eighty-four million, three hundred eighty-one thousand, two hundred fifty-three".