411928987 has 4 divisors (see below), whose sum is σ = 433609480. Its totient is φ = 390248496.

The previous prime is 411928939. The next prime is 411929051. The reversal of 411928987 is 789829114.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789829114 = 2 ⋅394914557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-411928987 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 411928987.

It is not an unprimeable number, because it can be changed into a prime (411920987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10840218 + ... + 10840255.

It is an arithmetic number, because the mean of its divisors is an integer number (108402370).

Almost surely, 2^411928987 is an apocalyptic number.

411928987 is a deficient number, since it is larger than the sum of its proper divisors (21680493).

411928987 is a wasteful number, since it uses less digits than its factorization.

411928987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21680492.

The product of its digits is 290304, while the sum is 49.

The square root of 411928987 is about 20296.0337751000. The cubic root of 411928987 is about 744.0591320741.

The spelling of 411928987 in words is "four hundred eleven million, nine hundred twenty-eight thousand, nine hundred eighty-seven".