84047379 has 16 divisors (see below), whose sum is σ = 121390752. Its totient is φ = 51418368.

The previous prime is 84047363. The next prime is 84047399. The reversal of 84047379 is 97374048.

It is not a de Polignac number, because 84047379 - 2⁴ = 84047363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84047379.

It is not an unprimeable number, because it can be changed into a prime (84047339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519 + ... + 12975.

It is an arithmetic number, because the mean of its divisors is an integer number (7586922).

Almost surely, 2^84047379 is an apocalyptic number.

84047379 is a deficient number, since it is larger than the sum of its proper divisors (37343373).

84047379 is a wasteful number, since it uses less digits than its factorization.

84047379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12646.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 84047379 is about 9167.7357618989. The cubic root of 84047379 is about 438.0342386862.

The spelling of 84047379 in words is "eighty-four million, forty-seven thousand, three hundred seventy-nine".