415384021 has 4 divisors (see below), whose sum is σ = 447336652. Its totient is φ = 383431392.

The previous prime is 415384007. The next prime is 415384027. The reversal of 415384021 is 120483514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 244140625 + 171243396 = 15625^2 + 13086^2 .

It is a cyclic number.

It is not a de Polignac number, because 415384021 - 2⁷ = 415383893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415384027) 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, 15976296 + ... + 15976321.

It is an arithmetic number, because the mean of its divisors is an integer number (111834163).

Almost surely, 2^415384021 is an apocalyptic number.

It is an amenable number.

415384021 is a deficient number, since it is larger than the sum of its proper divisors (31952631).

415384021 is a wasteful number, since it uses less digits than its factorization.

415384021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31952630.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 415384021 is about 20380.9720327564. The cubic root of 415384021 is about 746.1335960715.

The spelling of 415384021 in words is "four hundred fifteen million, three hundred eighty-four thousand, twenty-one".