783963 has 6 divisors (see below), whose sum is σ = 1132404. Its totient is φ = 522636.

The previous prime is 783953. The next prime is 784009. The reversal of 783963 is 369387.

It is not a de Polignac number, because 783963 - 2⁵ = 783931 is a prime.

It is a super-2 number, since 2×783963² = 1229195970738, which contains 22 as substring.

783963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (783953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43545 + ... + 43562.

It is an arithmetic number, because the mean of its divisors is an integer number (188734).

2⁷⁸³⁹⁶³ is an apocalyptic number.

783963 is a deficient number, since it is larger than the sum of its proper divisors (348441).

783963 is a wasteful number, since it uses less digits than its factorization.

783963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87113 (or 87110 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 783963 is about 885.4168509804. The cubic root of 783963 is about 92.2072752559.

The spelling of 783963 in words is "seven hundred eighty-three thousand, nine hundred sixty-three".