84404079 has 8 divisors (see below), whose sum is σ = 125043120. Its totient is φ = 56269368.

The previous prime is 84404077. The next prime is 84404081. The reversal of 84404079 is 97040448.

It is an interprime number because it is at equal distance from previous prime (84404077) and next prime (84404081).

It is not a de Polignac number, because 84404079 - 2¹ = 84404077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84404077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563012 + ... + 1563065.

It is an arithmetic number, because the mean of its divisors is an integer number (15630390).

Almost surely, 2^84404079 is an apocalyptic number.

84404079 is a deficient number, since it is larger than the sum of its proper divisors (40639041).

84404079 is a wasteful number, since it uses less digits than its factorization.

84404079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126086 (or 3126080 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 84404079 is about 9187.1692593530. The cubic root of 84404079 is about 438.6530416183.

The spelling of 84404079 in words is "eighty-four million, four hundred four thousand, seventy-nine".