1395246609 has 9 divisors (see below), whose sum is σ = 2015518089. Its totient is φ = 930089700.

The previous prime is 1395246599. The next prime is 1395246617. The reversal of 1395246609 is 9066425931.

The square root of 1395246609 is 37353.

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

1395246609 is a `hidden beast` number, since 1 + 39 + 5 + 2 + 4 + 6 + 609 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1395246609 - 2¹³ = 1395238417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1395246689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 105834 + ... + 118284.

Almost surely, 2^1395246609 is an apocalyptic number.

1395246609 is the 37353-rd square number.

1395246609 is the 18677-th centered octagonal number.

It is an amenable number.

1395246609 is a deficient number, since it is larger than the sum of its proper divisors (620271480).

1395246609 is an frugal number, since it uses more digits than its factorization.

1395246609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24908 (or 12454 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The cubic root of 1395246609 is about 1117.4214193352.

It can be divided in two parts, 1395 and 246609, that added together give a square (248004 = 498²).

The spelling of 1395246609 in words is "one billion, three hundred ninety-five million, two hundred forty-six thousand, six hundred nine".