9400340987 has 2 divisors, whose sum is σ = 9400340988. Its totient is φ = 9400340986.

The previous prime is 9400340977. The next prime is 9400341031. The reversal of 9400340987 is 7890430049.

9400340987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (9400341031) can be obtained adding 9400340987 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9400340987 is a prime.

It is not a weakly prime, because it can be changed into another prime (9400340977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700170493 + 4700170494.

It is an arithmetic number, because the mean of its divisors is an integer number (4700170494).

Almost surely, 2^9400340987 is an apocalyptic number.

9400340987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9400340987 is an equidigital number, since it uses as much as digits as its factorization.

9400340987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 9400340987 is about 96955.3556385618. The cubic root of 9400340987 is about 2110.4798132411.

The spelling of 9400340987 in words is "nine billion, four hundred million, three hundred forty thousand, nine hundred eighty-seven".