395115129 has 6 divisors (see below), whose sum is σ = 570721866. Its totient is φ = 263410080.

The previous prime is 395115121. The next prime is 395115143. The reversal of 395115129 is 921511593.

It can be written as a sum of positive squares in only one way, i.e., 228705129 + 166410000 = 15123^2 + 12900^2 .

It is not a de Polignac number, because 395115129 - 2³ = 395115121 is a prime.

It is a super-2 number, since 2×395115129² = 312231930329373282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 395115093 and 395115102.

It is not an unprimeable number, because it can be changed into a prime (395115121) 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, 21950832 + ... + 21950849.

It is an arithmetic number, because the mean of its divisors is an integer number (95120311).

Almost surely, 2^395115129 is an apocalyptic number.

It is an amenable number.

395115129 is a deficient number, since it is larger than the sum of its proper divisors (175606737).

395115129 is a wasteful number, since it uses less digits than its factorization.

395115129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43901687 (or 43901684 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 395115129 is about 19877.5030876617. The cubic root of 395115129 is about 733.7946702971.

The spelling of 395115129 in words is "three hundred ninety-five million, one hundred fifteen thousand, one hundred twenty-nine".