40437 has 6 divisors (see below), whose sum is σ = 58422. Its totient is φ = 26952.

The previous prime is 40433. The next prime is 40459. The reversal of 40437 is 73404.

It can be written as a sum of positive squares in only one way, i.e., 40401 + 36 = 201^2 + 6^2 .

It is not a de Polignac number, because 40437 - 2² = 40433 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40437.

It is not an unprimeable number, because it can be changed into a prime (40433) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2238 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (9737).

2⁴⁰⁴³⁷ is an apocalyptic number.

It is an amenable number.

40437 is a deficient number, since it is larger than the sum of its proper divisors (17985).

40437 is a wasteful number, since it uses less digits than its factorization.

40437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499 (or 4496 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40437 is about 201.0895322984. The cubic root of 40437 is about 34.3236113695.

It can be divided in two parts, 404 and 37, that added together give a square (441 = 21²).

The spelling of 40437 in words is "forty thousand, four hundred thirty-seven".