396689492 has 36 divisors (see below), whose sum is σ = 762937980. Its totient is φ = 180225024.

The previous prime is 396689483. The next prime is 396689539. The reversal of 396689492 is 294986693.

It can be written as a sum of positive squares in 6 ways, for example, as 119333776 + 277355716 = 10924^2 + 16654^2 .

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 27608 + ... + 39440.

Almost surely, 2^396689492 is an apocalyptic number.

It is an amenable number.

396689492 is a deficient number, since it is larger than the sum of its proper divisors (366248488).

396689492 is a wasteful number, since it uses less digits than its factorization.

396689492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11900 (or 11881 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 56.

The square root of 396689492 is about 19917.0653460795. The cubic root of 396689492 is about 734.7679968700.

The spelling of 396689492 in words is "three hundred ninety-six million, six hundred eighty-nine thousand, four hundred ninety-two".