393136 has 10 divisors (see below), whose sum is σ = 761732. Its totient is φ = 196560.

The previous prime is 393121. The next prime is 393137. The reversal of 393136 is 631393.

It is a self number, because there is not a number n which added to its sum of digits gives 393136.

It is not an unprimeable number, because it can be changed into a prime (393137) by changing a digit.

393136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 12270 + ... + 12301.

2³⁹³¹³⁶ is an apocalyptic number.

It is an amenable number.

393136 is a deficient number, since it is larger than the sum of its proper divisors (368596).

393136 is a wasteful number, since it uses less digits than its factorization.

393136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24579 (or 24573 counting only the distinct ones).

The product of its digits is 1458, while the sum is 25.

The square root of 393136 is about 627.0055821123. The cubic root of 393136 is about 73.2567428086.

It can be divided in two parts, 393 and 136, that added together give a square (529 = 23²).

The spelling of 393136 in words is "three hundred ninety-three thousand, one hundred thirty-six".