394649413 has 4 divisors (see below), whose sum is σ = 395725120. Its totient is φ = 393573708.

The previous prime is 394649393. The next prime is 394649471. The reversal of 394649413 is 314946493.

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: 314946493 = 677 ⋅465209.

It is a cyclic number.

It is not a de Polignac number, because 394649413 - 2⁹ = 394648901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394649413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394649483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537303 + ... + 538036.

It is an arithmetic number, because the mean of its divisors is an integer number (98931280).

Almost surely, 2^394649413 is an apocalyptic number.

It is an amenable number.

394649413 is a deficient number, since it is larger than the sum of its proper divisors (1075707).

394649413 is a wasteful number, since it uses less digits than its factorization.

394649413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075706.

The product of its digits is 279936, while the sum is 43.

The square root of 394649413 is about 19865.7849832318. The cubic root of 394649413 is about 733.5062528634.

The spelling of 394649413 in words is "three hundred ninety-four million, six hundred forty-nine thousand, four hundred thirteen".