1963406 has 4 divisors (see below), whose sum is σ = 2945112. Its totient is φ = 981702.

The previous prime is 1963397. The next prime is 1963411. The reversal of 1963406 is 6043691.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490850 + ... + 490853.

It is an arithmetic number, because the mean of its divisors is an integer number (736278).

2^1963406 is an apocalyptic number.

1963406 is a deficient number, since it is larger than the sum of its proper divisors (981706).

1963406 is an equidigital number, since it uses as much as digits as its factorization.

1963406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981705.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1963406 is about 1401.2159005664. The cubic root of 1963406 is about 125.2189442833.

The spelling of 1963406 in words is "one million, nine hundred sixty-three thousand, four hundred six".