1406939 has 2 divisors, whose sum is σ = 1406940. Its totient is φ = 1406938.

The previous prime is 1406927. The next prime is 1406947. The reversal of 1406939 is 9396041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1406939 - 2⁸ = 1406683 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1406959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703469 + 703470.

It is an arithmetic number, because the mean of its divisors is an integer number (703470).

2^1406939 is an apocalyptic number.

1406939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406939 is an equidigital number, since it uses as much as digits as its factorization.

1406939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1406939 is about 1186.1445948956. The cubic root of 1406939 is about 112.0534130860.

The spelling of 1406939 in words is "one million, four hundred six thousand, nine hundred thirty-nine".