2406389305 has 12 divisors (see below), whose sum is σ = 2935804716. Its totient is φ = 1893537600.

The previous prime is 2406389299. The next prime is 2406389341. The reversal of 2406389305 is 5039836042.

It can be written as a sum of positive squares in 6 ways, for example, as 1057810576 + 1348578729 = 32524^2 + 36723^2 .

It is not a de Polignac number, because 2406389305 - 2⁹ = 2406388793 is a prime.

It is a super-3 number, since 3×2406389305³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46066 + ... + 83275.

It is an arithmetic number, because the mean of its divisors is an integer number (244650393).

Almost surely, 2^2406389305 is an apocalyptic number.

It is an amenable number.

2406389305 is a deficient number, since it is larger than the sum of its proper divisors (529415411).

2406389305 is an equidigital number, since it uses as much as digits as its factorization.

2406389305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129468 (or 129407 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 2406389305 is about 49054.9620833611. The cubic root of 2406389305 is about 1340.0529616329.

The spelling of 2406389305 in words is "two billion, four hundred six million, three hundred eighty-nine thousand, three hundred five".