1405141897 has 2 divisors, whose sum is σ = 1405141898. Its totient is φ = 1405141896.

The previous prime is 1405141891. The next prime is 1405141909. The reversal of 1405141897 is 7981415041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877107456 + 528034441 = 29616^2 + 22979^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405141897 - 2¹¹ = 1405139849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405141891) 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 as a sum of consecutive naturals, namely, 702570948 + 702570949.

It is an arithmetic number, because the mean of its divisors is an integer number (702570949).

Almost surely, 2^1405141897 is an apocalyptic number.

It is an amenable number.

1405141897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405141897 is an equidigital number, since it uses as much as digits as its factorization.

1405141897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1405141897 is about 37485.2223816266. Note that the first 3 decimals coincide. The cubic root of 1405141897 is about 1120.0568362420.

The spelling of 1405141897 in words is "one billion, four hundred five million, one hundred forty-one thousand, eight hundred ninety-seven".