395097649 has 2 divisors, whose sum is σ = 395097650. Its totient is φ = 395097648.

The previous prime is 395097623. The next prime is 395097673. The reversal of 395097649 is 946790593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333318049 + 61779600 = 18257^2 + 7860^2 .

It is a cyclic number.

It is not a de Polignac number, because 395097649 - 2⁵ = 395097617 is a prime.

It is a super-2 number, since 2×395097649² = 312204304490654402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 395097596 and 395097605.

It is not a weakly prime, because it can be changed into another prime (395097349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197548824 + 197548825.

It is an arithmetic number, because the mean of its divisors is an integer number (197548825).

Almost surely, 2^395097649 is an apocalyptic number.

It is an amenable number.

395097649 is a deficient number, since it is larger than the sum of its proper divisors (1).

395097649 is an equidigital number, since it uses as much as digits as its factorization.

395097649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 395097649 is about 19877.0633897465. The cubic root of 395097649 is about 733.7838490460.

The spelling of 395097649 in words is "three hundred ninety-five million, ninety-seven thousand, six hundred forty-nine".