1994238799 has 6 divisors (see below), whose sum is σ = 2319828864. Its totient is φ = 1709347500.

The previous prime is 1994238793. The next prime is 1994238809. The reversal of 1994238799 is 9978324991.

It is not a de Polignac number, because 1994238799 - 2⁷ = 1994238671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994238793) 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, 20349327 + ... + 20349424.

It is an arithmetic number, because the mean of its divisors is an integer number (386638144).

Almost surely, 2^1994238799 is an apocalyptic number.

1994238799 is a deficient number, since it is larger than the sum of its proper divisors (325590065).

1994238799 is an equidigital number, since it uses as much as digits as its factorization.

1994238799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40698765 (or 40698758 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 61.

The square root of 1994238799 is about 44656.9009112813. The cubic root of 1994238799 is about 1258.7101100027.

The spelling of 1994238799 in words is "one billion, nine hundred ninety-four million, two hundred thirty-eight thousand, seven hundred ninety-nine".