84381479 has 24 divisors (see below), whose sum is σ = 106580880. Its totient is φ = 66213504.

The previous prime is 84381469. The next prime is 84381481. The reversal of 84381479 is 97418348.

It is not a de Polignac number, because 84381479 - 2⁴ = 84381463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84381419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88067 + ... + 89019.

It is an arithmetic number, because the mean of its divisors is an integer number (4440870).

Almost surely, 2^84381479 is an apocalyptic number.

84381479 is a deficient number, since it is larger than the sum of its proper divisors (22199401).

84381479 is a wasteful number, since it uses less digits than its factorization.

84381479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1112 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 84381479 is about 9185.9392007568. The cubic root of 84381479 is about 438.6138869400.

The spelling of 84381479 in words is "eighty-four million, three hundred eighty-one thousand, four hundred seventy-nine".