844401963 has 16 divisors (see below), whose sum is σ = 1172864000. Its totient is φ = 539771040.

The previous prime is 844401947. The next prime is 844401973. The reversal of 844401963 is 369104448.

It is a happy number.

It is not a de Polignac number, because 844401963 - 2⁴ = 844401947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844401913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31513 + ... + 51786.

It is an arithmetic number, because the mean of its divisors is an integer number (73304000).

Almost surely, 2^844401963 is an apocalyptic number.

844401963 is a deficient number, since it is larger than the sum of its proper divisors (328462037).

844401963 is a wasteful number, since it uses less digits than its factorization.

844401963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83442.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 844401963 is about 29058.5953376966. The cubic root of 844401963 is about 945.1841090295.

The spelling of 844401963 in words is "eight hundred forty-four million, four hundred one thousand, nine hundred sixty-three".