395109045 has 12 divisors (see below), whose sum is σ = 684855756. Its totient is φ = 210724800.

The previous prime is 395109037. The next prime is 395109059. The reversal of 395109045 is 540901593.

It can be written as a sum of positive squares in 2 ways, for example, as 233539524 + 161569521 = 15282^2 + 12711^2 .

It is not a de Polignac number, because 395109045 - 2³ = 395109037 is a prime.

It is a super-2 number, since 2×395109045² = 312222314881624050, which contains 22 as substring.

It is a congruent 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, 4390056 + ... + 4390145.

It is an arithmetic number, because the mean of its divisors is an integer number (57071313).

Almost surely, 2^395109045 is an apocalyptic number.

It is an amenable number.

395109045 is a deficient number, since it is larger than the sum of its proper divisors (289746711).

395109045 is a wasteful number, since it uses less digits than its factorization.

395109045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780212 (or 8780209 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 395109045 is about 19877.3500497425. The cubic root of 395109045 is about 733.7909039436.

The spelling of 395109045 in words is "three hundred ninety-five million, one hundred nine thousand, forty-five".