211424749 has 4 divisors (see below), whose sum is σ = 211482720. Its totient is φ = 211366780.

The previous prime is 211424747. The next prime is 211424797. The reversal of 211424749 is 947424112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211424749 - 2¹ = 211424747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211424747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23119 + ... + 30940.

It is an arithmetic number, because the mean of its divisors is an integer number (52870680).

Almost surely, 2^211424749 is an apocalyptic number.

It is an amenable number.

211424749 is a deficient number, since it is larger than the sum of its proper divisors (57971).

211424749 is an equidigital number, since it uses as much as digits as its factorization.

211424749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57970.

The product of its digits is 16128, while the sum is 34.

The square root of 211424749 is about 14540.4521594069. The cubic root of 211424749 is about 595.7333884405.

The spelling of 211424749 in words is "two hundred eleven million, four hundred twenty-four thousand, seven hundred forty-nine".