1000408987 has 2 divisors, whose sum is σ = 1000408988. Its totient is φ = 1000408986.

The previous prime is 1000408961. The next prime is 1000409023. The reversal of 1000408987 is 7898040001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000408987 - 2⁷ = 1000408859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000408187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500204493 + 500204494.

It is an arithmetic number, because the mean of its divisors is an integer number (500204494).

Almost surely, 2^1000408987 is an apocalyptic number.

1000408987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000408987 is an equidigital number, since it uses as much as digits as its factorization.

1000408987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1000408987 is about 31629.2425928918. The cubic root of 1000408987 is about 1000.1363104186.

Adding to 1000408987 its reverse (7898040001), we get a palindrome (8898448988).

The spelling of 1000408987 in words is "one billion, four hundred eight thousand, nine hundred eighty-seven".