945989856 has 72 divisors (see below), whose sum is σ = 3074473584. Its totient is φ = 270282240.

The previous prime is 945989851. The next prime is 945989857. The reversal of 945989856 is 658989549.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 945989793 and 945989802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945989851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232605 + ... + 236636.

It is an arithmetic number, because the mean of its divisors is an integer number (42701022).

Almost surely, 2^945989856 is an apocalyptic number.

945989856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

945989856 is an abundant number, since it is smaller than the sum of its proper divisors (2128483728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

945989856 is a wasteful number, since it uses less digits than its factorization.

945989856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469264 (or 469253 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The square root of 945989856 is about 30756.9480930732. The cubic root of 945989856 is about 981.6624067863.

The spelling of 945989856 in words is "nine hundred forty-five million, nine hundred eighty-nine thousand, eight hundred fifty-six".