394513153 has 4 divisors (see below), whose sum is σ = 395631108. Its totient is φ = 393395200.

The previous prime is 394513139. The next prime is 394513199. The reversal of 394513153 is 351315493.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 204404209 + 190108944 = 14297^2 + 13788^2 .

It is a cyclic number.

It is not a de Polignac number, because 394513153 - 2⁹ = 394512641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394513103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558448 + ... + 559153.

It is an arithmetic number, because the mean of its divisors is an integer number (98907777).

Almost surely, 2^394513153 is an apocalyptic number.

It is an amenable number.

394513153 is a deficient number, since it is larger than the sum of its proper divisors (1117955).

394513153 is a wasteful number, since it uses less digits than its factorization.

394513153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117954.

The product of its digits is 24300, while the sum is 34.

The square root of 394513153 is about 19862.3551725368. The cubic root of 394513153 is about 733.4218242847.

The spelling of 394513153 in words is "three hundred ninety-four million, five hundred thirteen thousand, one hundred fifty-three".