4400166565 has 16 divisors (see below), whose sum is σ = 5468113728. Its totient is φ = 3396830976.

The previous prime is 4400166557. The next prime is 4400166599. The reversal of 4400166565 is 5656610044.

It is a cyclic number.

It is not a de Polignac number, because 4400166565 - 2³ = 4400166557 is a prime.

It is a super-2 number, since 2×4400166565² = 38722931599487798450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105444 + ... + 141133.

It is an arithmetic number, because the mean of its divisors is an integer number (341757108).

Almost surely, 2^4400166565 is an apocalyptic number.

It is an amenable number.

4400166565 is a deficient number, since it is larger than the sum of its proper divisors (1067947163).

4400166565 is a wasteful number, since it uses less digits than its factorization.

4400166565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246708.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 4400166565 is about 66333.7513261537. The cubic root of 4400166565 is about 1638.6632182506.

The spelling of 4400166565 in words is "four billion, four hundred million, one hundred sixty-six thousand, five hundred sixty-five".