416444661 has 6 divisors (see below), whose sum is σ = 601531190. Its totient is φ = 277629768.

The previous prime is 416444627. The next prime is 416444681. The reversal of 416444661 is 166444614.

416444661 is a `hidden beast` number, since 4 + 1 + 644 + 4 + 6 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 355511025 + 60933636 = 18855^2 + 7806^2 .

It is not a de Polignac number, because 416444661 - 2⁷ = 416444533 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 (416444681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23135806 + ... + 23135823.

Almost surely, 2^416444661 is an apocalyptic number.

It is an amenable number.

416444661 is a deficient number, since it is larger than the sum of its proper divisors (185086529).

416444661 is a wasteful number, since it uses less digits than its factorization.

416444661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46271635 (or 46271632 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 416444661 is about 20406.9757926058. The cubic root of 416444661 is about 746.7681145597.

The spelling of 416444661 in words is "four hundred sixteen million, four hundred forty-four thousand, six hundred sixty-one".