40487437 has 2 divisors, whose sum is σ = 40487438. Its totient is φ = 40487436.

The previous prime is 40487413. The next prime is 40487443. The reversal of 40487437 is 73478404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37711881 + 2775556 = 6141^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 40487437 - 2¹⁵ = 40454669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40487396 and 40487405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40487477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20243718 + 20243719.

It is an arithmetic number, because the mean of its divisors is an integer number (20243719).

Almost surely, 2^40487437 is an apocalyptic number.

It is an amenable number.

40487437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40487437 is an equidigital number, since it uses as much as digits as its factorization.

40487437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 40487437 is about 6362.9739116234. The cubic root of 40487437 is about 343.3787603406.

The spelling of 40487437 in words is "forty million, four hundred eighty-seven thousand, four hundred thirty-seven".