1406539 has 2 divisors, whose sum is σ = 1406540. Its totient is φ = 1406538.

The previous prime is 1406533. The next prime is 1406543. The reversal of 1406539 is 9356041.

It is a strong prime.

It is an emirp because it is prime and its reverse (9356041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1406539 - 2¹³ = 1398347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1406533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703269 + 703270.

It is an arithmetic number, because the mean of its divisors is an integer number (703270).

2^1406539 is an apocalyptic number.

1406539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406539 is an equidigital number, since it uses as much as digits as its factorization.

1406539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1406539 is about 1185.9759694024. The cubic root of 1406539 is about 112.0427929588.

The spelling of 1406539 in words is "one million, four hundred six thousand, five hundred thirty-nine".