1956406 has 4 divisors (see below), whose sum is σ = 2934612. Its totient is φ = 978202.

The previous prime is 1956391. The next prime is 1956419. The reversal of 1956406 is 6046591.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 489100 + ... + 489103.

It is an arithmetic number, because the mean of its divisors is an integer number (733653).

2^1956406 is an apocalyptic number.

1956406 is a deficient number, since it is larger than the sum of its proper divisors (978206).

1956406 is an equidigital number, since it uses as much as digits as its factorization.

1956406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978205.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1956406 is about 1398.7158396186. The cubic root of 1956406 is about 125.0699555092.

The spelling of 1956406 in words is "one million, nine hundred fifty-six thousand, four hundred six".