84158487 has 16 divisors (see below), whose sum is σ = 142490880. Its totient is φ = 48090456.

The previous prime is 84158479. The next prime is 84158497. The reversal of 84158487 is 78485148.

It is not a de Polignac number, because 84158487 - 2³ = 84158479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84158407) 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, 222453 + ... + 222830.

It is an arithmetic number, because the mean of its divisors is an integer number (8905680).

Almost surely, 2^84158487 is an apocalyptic number.

84158487 is a deficient number, since it is larger than the sum of its proper divisors (58332393).

84158487 is a wasteful number, since it uses less digits than its factorization.

84158487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445299 (or 445293 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 84158487 is about 9173.7934901544. The cubic root of 84158487 is about 438.2271762022.

The spelling of 84158487 in words is "eighty-four million, one hundred fifty-eight thousand, four hundred eighty-seven".