1406815589 has 2 divisors, whose sum is σ = 1406815590. Its totient is φ = 1406815588.

The previous prime is 1406815583. The next prime is 1406815601. The reversal of 1406815589 is 9855186041.

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., 1264371364 + 142444225 = 35558^2 + 11935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406815589 - 2¹² = 1406811493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406815583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703407794 + 703407795.

It is an arithmetic number, because the mean of its divisors is an integer number (703407795).

Almost surely, 2^1406815589 is an apocalyptic number.

It is an amenable number.

1406815589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406815589 is an equidigital number, since it uses as much as digits as its factorization.

1406815589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 1406815589 is about 37507.5404285592. The cubic root of 1406815589 is about 1120.5013669947.

The spelling of 1406815589 in words is "one billion, four hundred six million, eight hundred fifteen thousand, five hundred eighty-nine".