84818479 has 2 divisors, whose sum is σ = 84818480. Its totient is φ = 84818478.

The previous prime is 84818473. The next prime is 84818501. The reversal of 84818479 is 97481848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84818479 - 2¹³ = 84810287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84818473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42409239 + 42409240.

It is an arithmetic number, because the mean of its divisors is an integer number (42409240).

Almost surely, 2^84818479 is an apocalyptic number.

84818479 is a deficient number, since it is larger than the sum of its proper divisors (1).

84818479 is an equidigital number, since it uses as much as digits as its factorization.

84818479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 84818479 is about 9209.6948375068. The cubic root of 84818479 is about 439.3697571252.

The spelling of 84818479 in words is "eighty-four million, eight hundred eighteen thousand, four hundred seventy-nine".