407213987 has 2 divisors, whose sum is σ = 407213988. Its totient is φ = 407213986.

The previous prime is 407213887. The next prime is 407214001. The reversal of 407213987 is 789312704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 407213987 - 2¹⁰ = 407212963 is a prime.

It is not a weakly prime, because it can be changed into another prime (407213887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203606993 + 203606994.

It is an arithmetic number, because the mean of its divisors is an integer number (203606994).

Almost surely, 2^407213987 is an apocalyptic number.

407213987 is a deficient number, since it is larger than the sum of its proper divisors (1).

407213987 is an equidigital number, since it uses as much as digits as its factorization.

407213987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 407213987 is about 20179.5437758142. The cubic root of 407213987 is about 741.2093610670.

The spelling of 407213987 in words is "four hundred seven million, two hundred thirteen thousand, nine hundred eighty-seven".