84091898 has 16 divisors (see below), whose sum is σ = 141325344. Its totient is φ = 37190160.

The previous prime is 84091849. The next prime is 84091927. The reversal of 84091898 is 89819048.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50840 + ... + 52467.

It is an arithmetic number, because the mean of its divisors is an integer number (8832834).

Almost surely, 2^84091898 is an apocalyptic number.

84091898 is a deficient number, since it is larger than the sum of its proper divisors (57233446).

84091898 is a wasteful number, since it uses less digits than its factorization.

84091898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103357.

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 84091898 is about 9170.1634663729. The cubic root of 84091898 is about 438.1115657224. Note that the first 3 decimals are identical.

The spelling of 84091898 in words is "eighty-four million, ninety-one thousand, eight hundred ninety-eight".