211475393 has 6 divisors (see below), whose sum is σ = 223978626. Its totient is φ = 198979232.

The previous prime is 211475371. The next prime is 211475431. The reversal of 211475393 is 393574112.

It can be written as a sum of positive squares in only one way, i.e., 199035664 + 12439729 = 14108^2 + 3527^2 .

It is not a de Polignac number, because 211475393 - 2¹⁰ = 211474369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211475323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58196 + ... + 61722.

It is an arithmetic number, because the mean of its divisors is an integer number (37329771).

Almost surely, 2^211475393 is an apocalyptic number.

It is an amenable number.

211475393 is a deficient number, since it is larger than the sum of its proper divisors (12503233).

211475393 is an frugal number, since it uses more digits than its factorization.

211475393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071 (or 3544 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 211475393 is about 14542.1935415535. The cubic root of 211475393 is about 595.7809513255.

The spelling of 211475393 in words is "two hundred eleven million, four hundred seventy-five thousand, three hundred ninety-three".