84396487 has 16 divisors (see below), whose sum is σ = 99171072. Its totient is φ = 70318080.

The previous prime is 84396479. The next prime is 84396523. The reversal of 84396487 is 78469348.

It is not a de Polignac number, because 84396487 - 2³ = 84396479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84396487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84396427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76812 + ... + 77902.

It is an arithmetic number, because the mean of its divisors is an integer number (6198192).

Almost surely, 2^84396487 is an apocalyptic number.

84396487 is a deficient number, since it is larger than the sum of its proper divisors (14774585).

84396487 is a wasteful number, since it uses less digits than its factorization.

84396487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its digits is 1161216, while the sum is 49.

The square root of 84396487 is about 9186.7560651190. The cubic root of 84396487 is about 438.6398891981.

The spelling of 84396487 in words is "eighty-four million, three hundred ninety-six thousand, four hundred eighty-seven".