352821394 has 4 divisors (see below), whose sum is σ = 529232094. Its totient is φ = 176410696.

The previous prime is 352821389. The next prime is 352821419. The reversal of 352821394 is 493128253.

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

It can be written as a sum of positive squares in only one way, i.e., 285170769 + 67650625 = 16887^2 + 8225^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88205347 + ... + 88205350.

Almost surely, 2^352821394 is an apocalyptic number.

352821394 is a deficient number, since it is larger than the sum of its proper divisors (176410700).

352821394 is a wasteful number, since it uses less digits than its factorization.

352821394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176410699.

The product of its digits is 51840, while the sum is 37.

The square root of 352821394 is about 18783.5405075827. The cubic root of 352821394 is about 706.6184462864.

The spelling of 352821394 in words is "three hundred fifty-two million, eight hundred twenty-one thousand, three hundred ninety-four".