40436437 has 2 divisors, whose sum is σ = 40436438. Its totient is φ = 40436436.

The previous prime is 40436423. The next prime is 40436453. The reversal of 40436437 is 73463404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30758116 + 9678321 = 5546^2 + 3111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40436437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40436399 and 40436408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40431437) 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 as a sum of consecutive naturals, namely, 20218218 + 20218219.

It is an arithmetic number, because the mean of its divisors is an integer number (20218219).

Almost surely, 2^40436437 is an apocalyptic number.

It is an amenable number.

40436437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40436437 is an equidigital number, since it uses as much as digits as its factorization.

40436437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 40436437 is about 6358.9650887546. The cubic root of 40436437 is about 343.2345207414.

The spelling of 40436437 in words is "forty million, four hundred thirty-six thousand, four hundred thirty-seven".