40287437 has 2 divisors, whose sum is σ = 40287438. Its totient is φ = 40287436.

The previous prime is 40287427. The next prime is 40287449. The reversal of 40287437 is 73478204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 12208036 = 5299^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 40287437 - 2²⁰ = 39238861 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 40287397 and 40287406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40287427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143718 + 20143719.

It is an arithmetic number, because the mean of its divisors is an integer number (20143719).

Almost surely, 2^40287437 is an apocalyptic number.

It is an amenable number.

40287437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40287437 is an equidigital number, since it uses as much as digits as its factorization.

40287437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 40287437 is about 6347.2385334096. The cubic root of 40287437 is about 342.8124188603.

The spelling of 40287437 in words is "forty million, two hundred eighty-seven thousand, four hundred thirty-seven".