394980799 has 4 divisors (see below), whose sum is σ = 399052864. Its totient is φ = 390908736.

The previous prime is 394980791. The next prime is 394980811. The reversal of 394980799 is 997089493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997089493 = 1489 ⋅669637.

It is a cyclic number.

It is not a de Polignac number, because 394980799 - 2³ = 394980791 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 (394980791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035887 + ... + 2036080.

It is an arithmetic number, because the mean of its divisors is an integer number (99763216).

Almost surely, 2^394980799 is an apocalyptic number.

394980799 is a deficient number, since it is larger than the sum of its proper divisors (4072065).

394980799 is an equidigital number, since it uses as much as digits as its factorization.

394980799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072064.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 394980799 is about 19874.1238549024. The cubic root of 394980799 is about 733.7115031360.

It can be divided in two parts, 3949 and 80799, that added together give a palindrome (84748).

The spelling of 394980799 in words is "three hundred ninety-four million, nine hundred eighty thousand, seven hundred ninety-nine".