394018099 has 4 divisors (see below), whose sum is σ = 407604960. Its totient is φ = 380431240.

The previous prime is 394018081. The next prime is 394018103. The reversal of 394018099 is 990810493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394018099 - 2¹⁹ = 393493811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394018699) 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, 6793387 + ... + 6793444.

It is an arithmetic number, because the mean of its divisors is an integer number (101901240).

Almost surely, 2^394018099 is an apocalyptic number.

394018099 is a deficient number, since it is larger than the sum of its proper divisors (13586861).

394018099 is a wasteful number, since it uses less digits than its factorization.

394018099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586860.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 394018099 is about 19849.8891432673. The cubic root of 394018099 is about 733.1149182644.

The spelling of 394018099 in words is "three hundred ninety-four million, eighteen thousand, ninety-nine".