40455487 has 2 divisors, whose sum is σ = 40455488. Its totient is φ = 40455486.

The previous prime is 40455473. The next prime is 40455497. The reversal of 40455487 is 78455404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40455487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40455407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20227743 + 20227744.

It is an arithmetic number, because the mean of its divisors is an integer number (20227744).

Almost surely, 2^40455487 is an apocalyptic number.

40455487 is a deficient number, since it is larger than the sum of its proper divisors (1).

40455487 is an equidigital number, since it uses as much as digits as its factorization.

40455487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 40455487 is about 6360.4627976272. The cubic root of 40455487 is about 343.2884126565.

The spelling of 40455487 in words is "forty million, four hundred fifty-five thousand, four hundred eighty-seven".