84557479 has 8 divisors (see below), whose sum is σ = 86815872. Its totient is φ = 82312440.

The previous prime is 84557477. The next prime is 84557497. The reversal of 84557479 is 97475548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84557479 - 2¹ = 84557477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84557471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10212 + ... + 16534.

It is an arithmetic number, because the mean of its divisors is an integer number (10851984).

Almost surely, 2^84557479 is an apocalyptic number.

84557479 is a deficient number, since it is larger than the sum of its proper divisors (2258393).

84557479 is a wasteful number, since it uses less digits than its factorization.

84557479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677.

The product of its digits is 1411200, while the sum is 49.

The square root of 84557479 is about 9195.5140693710. The cubic root of 84557479 is about 438.9186237778.

The spelling of 84557479 in words is "eighty-four million, five hundred fifty-seven thousand, four hundred seventy-nine".