1406859 has 4 divisors (see below), whose sum is σ = 1875816. Its totient is φ = 937904.

The previous prime is 1406857. The next prime is 1406861. The reversal of 1406859 is 9586041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9586041 = 3 ⋅3195347.

It is an interprime number because it is at equal distance from previous prime (1406857) and next prime (1406861).

It is a cyclic number.

It is not a de Polignac number, because 1406859 - 2¹ = 1406857 is a prime.

It is a super-3 number, since 3×1406859³ = 8353586506163693337, which contains 333 as substring.

It is a D-number.

It is a plaindrome in base 14 and base 16.

It is not an unprimeable number, because it can be changed into a prime (1406857) 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 in 3 ways as a sum of consecutive naturals, for example, 234474 + ... + 234479.

It is an arithmetic number, because the mean of its divisors is an integer number (468954).

2^1406859 is an apocalyptic number.

1406859 is a deficient number, since it is larger than the sum of its proper divisors (468957).

1406859 is an equidigital number, since it uses as much as digits as its factorization.

1406859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468956.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1406859 is about 1186.1108717148. The cubic root of 1406859 is about 112.0512892216.

The spelling of 1406859 in words is "one million, four hundred six thousand, eight hundred fifty-nine".