53639386 has 16 divisors (see below), whose sum is σ = 88131240. Its totient is φ = 24371200.

The previous prime is 53639359. The next prime is 53639389. The reversal of 53639386 is 68393635.

It can be written as a sum of positive squares in 4 ways, for example, as 52838361 + 801025 = 7269^2 + 895^2 .

It is a super-3 number, since 3×53639386³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (53639389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26215 + ... + 28186.

Almost surely, 2^53639386 is an apocalyptic number.

53639386 is a deficient number, since it is larger than the sum of its proper divisors (34491854).

53639386 is a wasteful number, since it uses less digits than its factorization.

53639386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54449.

The product of its digits is 349920, while the sum is 43.

The square root of 53639386 is about 7323.8914519537. The cubic root of 53639386 is about 377.1330551232.

The spelling of 53639386 in words is "fifty-three million, six hundred thirty-nine thousand, three hundred eighty-six".