84491479 has 8 divisors (see below), whose sum is σ = 90000288. Its totient is φ = 79042560.

The previous prime is 84491419. The next prime is 84491483. The reversal of 84491479 is 97419448.

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 84491479 - 2¹⁵ = 84458711 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 (84491419) 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, 12042 + ... + 17719.

It is an arithmetic number, because the mean of its divisors is an integer number (11250036).

Almost surely, 2^84491479 is an apocalyptic number.

84491479 is a deficient number, since it is larger than the sum of its proper divisors (5508809).

84491479 is a wasteful number, since it uses less digits than its factorization.

84491479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29945.

The product of its digits is 290304, while the sum is 46.

The square root of 84491479 is about 9191.9246624415. The cubic root of 84491479 is about 438.8043970617.

The spelling of 84491479 in words is "eighty-four million, four hundred ninety-one thousand, four hundred seventy-nine".