1396992609 has 32 divisors (see below), whose sum is σ = 2170851840. Its totient is φ = 886847616.

The previous prime is 1396992563. The next prime is 1396992661. The reversal of 1396992609 is 9062996931.

It is not a de Polignac number, because 1396992609 - 2¹⁷ = 1396861537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1396994609) 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 31 ways as a sum of consecutive naturals, for example, 32077 + ... + 61829.

It is an arithmetic number, because the mean of its divisors is an integer number (67839120).

Almost surely, 2^1396992609 is an apocalyptic number.

It is an amenable number.

1396992609 is a deficient number, since it is larger than the sum of its proper divisors (773859231).

1396992609 is a wasteful number, since it uses less digits than its factorization.

1396992609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29846 (or 29840 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 54.

The square root of 1396992609 is about 37376.3643095473. The cubic root of 1396992609 is about 1117.8873356642.

The spelling of 1396992609 in words is "one billion, three hundred ninety-six million, nine hundred ninety-two thousand, six hundred nine".