416866421 has 16 divisors (see below), whose sum is σ = 443681280. Its totient is φ = 390854640.

The previous prime is 416866391. The next prime is 416866423. The reversal of 416866421 is 124668614.

It is not a de Polignac number, because 416866421 - 2⁶ = 416866357 is a prime.

It is a super-2 number, since 2×416866421² = 347555225914698482, 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 (416866423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264566 + ... + 266136.

It is an arithmetic number, because the mean of its divisors is an integer number (27730080).

Almost surely, 2^416866421 is an apocalyptic number.

It is an amenable number.

416866421 is a deficient number, since it is larger than the sum of its proper divisors (26814859).

416866421 is a wasteful number, since it uses less digits than its factorization.

416866421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its digits is 55296, while the sum is 38.

The square root of 416866421 is about 20417.3068988052. The cubic root of 416866421 is about 747.0201293599.

The spelling of 416866421 in words is "four hundred sixteen million, eight hundred sixty-six thousand, four hundred twenty-one".