211199440 has 120 divisors (see below), whose sum is σ = 530644608. Its totient is φ = 78140160.

The previous prime is 211199423. The next prime is 211199447. The reversal of 211199440 is 44991112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211199447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2050429 + ... + 2050531.

Almost surely, 2^211199440 is an apocalyptic number.

211199440 is a gapful number since it is divisible by the number (20) 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 211199440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265322304).

211199440 is an abundant number, since it is smaller than the sum of its proper divisors (319445168).

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

211199440 is a wasteful number, since it uses less digits than its factorization.

211199440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 211199440 is about 14532.7024327893. The cubic root of 211199440 is about 595.5216948357.

The spelling of 211199440 in words is "two hundred eleven million, one hundred ninety-nine thousand, four hundred forty".