223943209940 has 12 divisors (see below), whose sum is σ = 470280740916. Its totient is φ = 89577283968.

The previous prime is 223943209901. The next prime is 223943210063. The reversal of 223943209940 is 49902349322.

It can be written as a sum of positive squares in 2 ways, for example, as 169753888144 + 54189321796 = 412012^2 + 232786^2 .

It is a super-2 number, since 2×223943209940² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5598580229 + ... + 5598580268.

It is an arithmetic number, because the mean of its divisors is an integer number (39190061743).

Almost surely, 2^223943209940 is an apocalyptic number.

223943209940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223943209940 is an abundant number, since it is smaller than the sum of its proper divisors (246337530976).

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

223943209940 is a wasteful number, since it uses less digits than its factorization.

223943209940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197160506 (or 11197160504 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 223943209940 in words is "two hundred twenty-three billion, nine hundred forty-three million, two hundred nine thousand, nine hundred forty".