416684381 has 4 divisors (see below), whose sum is σ = 417096732. Its totient is φ = 416272032.

The previous prime is 416684371. The next prime is 416684393. The reversal of 416684381 is 183486614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183486614 = 2 ⋅91743307.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 416364025 = 566^2 + 20405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-416684381 is a prime.

It is a super-2 number, since 2×416684381² = 347251746738706322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416684321) 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, 204656 + ... + 206681.

It is an arithmetic number, because the mean of its divisors is an integer number (104274183).

Almost surely, 2^416684381 is an apocalyptic number.

It is an amenable number.

416684381 is a deficient number, since it is larger than the sum of its proper divisors (412351).

416684381 is a wasteful number, since it uses less digits than its factorization.

416684381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412350.

The product of its digits is 110592, while the sum is 41.

The square root of 416684381 is about 20412.8484293594. The cubic root of 416684381 is about 746.9113756225.

The spelling of 416684381 in words is "four hundred sixteen million, six hundred eighty-four thousand, three hundred eighty-one".