213469944 has 64 divisors (see below), whose sum is σ = 549067680. Its totient is φ = 69120000.

The previous prime is 213469943. The next prime is 213469951. The reversal of 213469944 is 449964312.

213469944 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213469896 and 213469905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213469943) 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, 394314 + ... + 394854.

Almost surely, 2^213469944 is an apocalyptic number.

213469944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213469944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274533840).

213469944 is an abundant number, since it is smaller than the sum of its proper divisors (335597736).

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

213469944 is a wasteful number, since it uses less digits than its factorization.

213469944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 988 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 213469944 is about 14610.6106648559. The cubic root of 213469944 is about 597.6481489281.

The spelling of 213469944 in words is "two hundred thirteen million, four hundred sixty-nine thousand, nine hundred forty-four".