407381987 has 2 divisors, whose sum is σ = 407381988. Its totient is φ = 407381986.

The previous prime is 407381981. The next prime is 407381993. The reversal of 407381987 is 789183704.

It is a balanced prime because it is at equal distance from previous prime (407381981) and next prime (407381993).

It is a cyclic number.

It is not a de Polignac number, because 407381987 - 2¹⁴ = 407365603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (407381981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203690993 + 203690994.

It is an arithmetic number, because the mean of its divisors is an integer number (203690994).

Almost surely, 2^407381987 is an apocalyptic number.

407381987 is a deficient number, since it is larger than the sum of its proper divisors (1).

407381987 is an equidigital number, since it uses as much as digits as its factorization.

407381987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 407381987 is about 20183.7059778426. The cubic root of 407381987 is about 741.3112780412.

The spelling of 407381987 in words is "four hundred seven million, three hundred eighty-one thousand, nine hundred eighty-seven".