3408166021 has 16 divisors (see below), whose sum is σ = 3865590400. Its totient is φ = 2978814528.

The previous prime is 3408165989. The next prime is 3408166039. The reversal of 3408166021 is 1206618043.

It is a happy number.

It is not a de Polignac number, because 3408166021 - 2⁵ = 3408165989 is a prime.

It is the 58380-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3408166081) by changing a digit.

It is a nontrivial repunit in base 58379.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877135 + ... + 881011.

It is an arithmetic number, because the mean of its divisors is an integer number (241599400).

Almost surely, 2^3408166021 is an apocalyptic number.

It is an amenable number.

3408166021 is a deficient number, since it is larger than the sum of its proper divisors (457424379).

3408166021 is a wasteful number, since it uses less digits than its factorization.

3408166021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7468.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 3408166021 is about 58379.5000064235. The cubic root of 3408166021 is about 1504.8974770027.

The spelling of 3408166021 in words is "three billion, four hundred eight million, one hundred sixty-six thousand, twenty-one".