1984449117 has 32 divisors (see below), whose sum is σ = 3215676672. Its totient is φ = 1062641664.

The previous prime is 1984449113. The next prime is 1984449121. The reversal of 1984449117 is 7119444891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1984449113) and next prime (1984449121).

It is not a de Polignac number, because 1984449117 - 2² = 1984449113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984449113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71253 + ... + 95109.

It is an arithmetic number, because the mean of its divisors is an integer number (100489896).

Almost surely, 2^1984449117 is an apocalyptic number.

1984449117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1984449117 is a deficient number, since it is larger than the sum of its proper divisors (1231227555).

1984449117 is a wasteful number, since it uses less digits than its factorization.

1984449117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24117.

The product of its digits is 290304, while the sum is 48.

The square root of 1984449117 is about 44547.1561045147. The cubic root of 1984449117 is about 1256.6470688201.

The spelling of 1984449117 in words is "one billion, nine hundred eighty-four million, four hundred forty-nine thousand, one hundred seventeen".