436 has 6 divisors (see below), whose sum is σ = 770.
Its totient is φ = 216.
The previous prime is 433. The next prime is 439. The reversal of 436 is 634.
It can be divided in two parts, 43 and 6, that added together give a square (49 = 72).
436 is nontrivially palindromic in base 14 and base 15.
436 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.
It is an interprime number because it is at equal distance from previous prime (433) and next prime (439).
It can be written as a sum of positive squares in only one way, i.e., 400 + 36 = 20^2 + 6^2
It is an alternating number because its digits alternate between even and odd.
It is a pancake number, because a pancake can be divided into 436 parts by 29 straight cuts.
436 is an undulating number in base 14 and base 15.
436 is a modest number, since divided by 36 gives 4 as remainder.
It is a plaindrome in base 11 and base 13.
It is a nialpdrome in base 5 and base 8.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (431) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51 + ... + 58.
It is an amenable number.
436 is a deficient number, since it is larger than the sum of its proper divisors (334).
436 is a wasteful number, since it uses less digits than its factorization.
436 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 113 (or 111 counting only the distinct ones).
The product of its digits is 72, while the sum is 13.
The square root of 436 is about 20.8806130178.
The cubic root of 436 is about 7.5827865269.
The spelling of 436 in words is "four hundred thirty-six", and thus it is an aban number.