419911987 has 24 divisors (see below), whose sum is σ = 472652208. Its totient is φ = 372683520.

The previous prime is 419911931. The next prime is 419911991. The reversal of 419911987 is 789119914.

It is not a de Polignac number, because 419911987 - 2⁷ = 419911859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 419911987.

It is not an unprimeable number, because it can be changed into a prime (419911087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1209948 + ... + 1210294.

It is an arithmetic number, because the mean of its divisors is an integer number (19693842).

Almost surely, 2^419911987 is an apocalyptic number.

419911987 is a deficient number, since it is larger than the sum of its proper divisors (52740221).

419911987 is a wasteful number, since it uses less digits than its factorization.

419911987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 568 counting only the distinct ones).

The product of its digits is 163296, while the sum is 49.

The square root of 419911987 is about 20491.7541220853. The cubic root of 419911987 is about 748.8349241051.

It can be divided in two parts, 4 and 19911987, that added together give a palindrome (19911991).

The spelling of 419911987 in words is "four hundred nineteen million, nine hundred eleven thousand, nine hundred eighty-seven".