1406455439 has 2 divisors, whose sum is σ = 1406455440. Its totient is φ = 1406455438.

The previous prime is 1406455417. The next prime is 1406455493. The reversal of 1406455439 is 9345546041.

Together with next prime (1406455493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406455439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406455396 and 1406455405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406485439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703227719 + 703227720.

It is an arithmetic number, because the mean of its divisors is an integer number (703227720).

Almost surely, 2^1406455439 is an apocalyptic number.

1406455439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406455439 is an equidigital number, since it uses as much as digits as its factorization.

1406455439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 1406455439 is about 37502.7390866321. The cubic root of 1406455439 is about 1120.4057413344.

The spelling of 1406455439 in words is "one billion, four hundred six million, four hundred fifty-five thousand, four hundred thirty-nine".