408787 has 2 divisors, whose sum is σ = 408788. Its totient is φ = 408786.

The previous prime is 408773. The next prime is 408803. The reversal of 408787 is 787804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408787 - 2⁷ = 408659 is a prime.

It is a super-2 number, since 2×408787² = 334213622738, which contains 22 as substring.

408787 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (403787) 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, 204393 + 204394.

It is an arithmetic number, because the mean of its divisors is an integer number (204394).

2⁴⁰⁸⁷⁸⁷ is an apocalyptic number.

408787 is a deficient number, since it is larger than the sum of its proper divisors (1).

408787 is an equidigital number, since it uses as much as digits as its factorization.

408787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 408787 is about 639.3645282622. The cubic root of 408787 is about 74.2162532235.

It can be divided in two parts, 40878 and 7, that multiplied together give a triangular number (286146 = T₇₅₆).

The spelling of 408787 in words is "four hundred eight thousand, seven hundred eighty-seven".