84605899 has 6 divisors (see below), whose sum is σ = 98419164. Its totient is φ = 72519300.

The previous prime is 84605881. The next prime is 84605903. The reversal of 84605899 is 99850648.

It is a happy number.

It is not a de Polignac number, because 84605899 - 2⁷ = 84605771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1726651 = 84605899 / (8 + 4 + 6 + 0 + 5 + 8 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84605819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 863277 + ... + 863374.

It is an arithmetic number, because the mean of its divisors is an integer number (16403194).

Almost surely, 2^84605899 is an apocalyptic number.

84605899 is a deficient number, since it is larger than the sum of its proper divisors (13813265).

84605899 is a wasteful number, since it uses less digits than its factorization.

84605899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726665 (or 1726658 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 84605899 is about 9198.1464980723. The cubic root of 84605899 is about 439.0023868572.

The spelling of 84605899 in words is "eighty-four million, six hundred five thousand, eight hundred ninety-nine".