1406928689 has 2 divisors, whose sum is σ = 1406928690. Its totient is φ = 1406928688.

The previous prime is 1406928683. The next prime is 1406928751. The reversal of 1406928689 is 9868296041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311671089 + 95257600 = 36217^2 + 9760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406928689 - 2¹⁶ = 1406863153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1406928689.

It is not a weakly prime, because it can be changed into another prime (1406928683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703464344 + 703464345.

It is an arithmetic number, because the mean of its divisors is an integer number (703464345).

Almost surely, 2^1406928689 is an apocalyptic number.

It is an amenable number.

1406928689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406928689 is an equidigital number, since it uses as much as digits as its factorization.

1406928689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 1406928689 is about 37509.0480950930. The cubic root of 1406928689 is about 1120.5313935099.

The spelling of 1406928689 in words is "one billion, four hundred six million, nine hundred twenty-eight thousand, six hundred eighty-nine".