395624646169 has 9 divisors (see below), whose sum is σ = 397807200063. Its totient is φ = 393454012032.

The previous prime is 395624646121. The next prime is 395624646211. The reversal of 395624646169 is 961646426593.

The square root of 395624646169 is 628987.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 95855256025 + 299769390144 = 309605^2 + 547512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-395624646169 is a prime.

It is a super-2 number, since 2×395624646169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395622646169) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 121392862 + ... + 121396120.

It is an arithmetic number, because the mean of its divisors is an integer number (44200800007).

Almost surely, 2^395624646169 is an apocalyptic number.

395624646169 is the 628987-th square number.

395624646169 is the 314494-th centered octagonal number.

It is an amenable number.

395624646169 is a deficient number, since it is larger than the sum of its proper divisors (2182553894).

395624646169 is an frugal number, since it uses more digits than its factorization.

395624646169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904 (or 3452 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 61.

The spelling of 395624646169 in words is "three hundred ninety-five billion, six hundred twenty-four million, six hundred forty-six thousand, one hundred sixty-nine".