394550801039 has 4 divisors (see below), whose sum is σ = 397063863624. Its totient is φ = 392037738456.

The previous prime is 394550801011. The next prime is 394550801041. The reversal of 394550801039 is 930108055493.

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 394550801039 - 2¹⁶ = 394550735503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394550800984 and 394550801002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394550801069) 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, 1256531057 + ... + 1256531370.

It is an arithmetic number, because the mean of its divisors is an integer number (99265965906).

Almost surely, 2^394550801039 is an apocalyptic number.

394550801039 is a deficient number, since it is larger than the sum of its proper divisors (2513062585).

394550801039 is a wasteful number, since it uses less digits than its factorization.

394550801039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513062584.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 394550801039 in words is "three hundred ninety-four billion, five hundred fifty million, eight hundred one thousand, thirty-nine".