1984400499 has 8 divisors (see below), whose sum is σ = 2654376192. Its totient is φ = 1318679240.

The previous prime is 1984400477. The next prime is 1984400501. The reversal of 1984400499 is 9940044891.

It is a happy number.

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 1984400499 - 2¹³ = 1984392307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1984400419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062519 + ... + 1064384.

It is an arithmetic number, because the mean of its divisors is an integer number (331797024).

Almost surely, 2^1984400499 is an apocalyptic number.

1984400499 is a deficient number, since it is larger than the sum of its proper divisors (669975693).

1984400499 is a wasteful number, since it uses less digits than its factorization.

1984400499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127217.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1984400499 is about 44546.6104097719. The cubic root of 1984400499 is about 1256.6368063304.

The spelling of 1984400499 in words is "one billion, nine hundred eighty-four million, four hundred thousand, four hundred ninety-nine".