394288206949 has 24 divisors (see below), whose sum is σ = 495552650208. Its totient is φ = 310947971040.

The previous prime is 394288206887. The next prime is 394288206953. The reversal of 394288206949 is 949602882493.

It is not a de Polignac number, because 394288206949 - 2⁷ = 394288206821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394288206979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 812547 + ... + 1203664.

It is an arithmetic number, because the mean of its divisors is an integer number (20648027092).

Almost surely, 2^394288206949 is an apocalyptic number.

It is an amenable number.

394288206949 is a deficient number, since it is larger than the sum of its proper divisors (101264443259).

394288206949 is a wasteful number, since it uses less digits than its factorization.

394288206949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016545 (or 2016538 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 64.

The spelling of 394288206949 in words is "three hundred ninety-four billion, two hundred eighty-eight million, two hundred six thousand, nine hundred forty-nine".