393771252 has 36 divisors (see below), whose sum is σ = 1068809280. Its totient is φ = 112505904.

The previous prime is 393771233. The next prime is 393771277. The reversal of 393771252 is 252177393.

It is a self number, because there is not a number n which added to its sum of digits gives 393771252.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 334252 + ... + 335427.

Almost surely, 2^393771252 is an apocalyptic number.

It is an amenable number.

393771252 is an abundant number, since it is smaller than the sum of its proper divisors (675038028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

393771252 is a wasteful number, since it uses less digits than its factorization.

393771252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669700 (or 669691 counting only the distinct ones).

The product of its digits is 79380, while the sum is 39.

The square root of 393771252 is about 19843.6703258243. The cubic root of 393771252 is about 732.9617907617.

The spelling of 393771252 in words is "three hundred ninety-three million, seven hundred seventy-one thousand, two hundred fifty-two".