394920033 has 4 divisors (see below), whose sum is σ = 526560048. Its totient is φ = 263280020.

The previous prime is 394919977. The next prime is 394920037. The reversal of 394920033 is 330029493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 330029493 = 3 ⋅110009831.

It is a cyclic number.

It is not a de Polignac number, because 394920033 - 2¹⁸ = 394657889 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 394919976 and 394920003.

It is not an unprimeable number, because it can be changed into a prime (394920037) 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, 65820003 + ... + 65820008.

It is an arithmetic number, because the mean of its divisors is an integer number (131640012).

Almost surely, 2^394920033 is an apocalyptic number.

It is an amenable number.

394920033 is a deficient number, since it is larger than the sum of its proper divisors (131640015).

394920033 is a wasteful number, since it uses less digits than its factorization.

394920033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131640014.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 394920033 is about 19872.5950243042. The cubic root of 394920033 is about 733.6738751467.

The spelling of 394920033 in words is "three hundred ninety-four million, nine hundred twenty thousand, thirty-three".