7211493 has 6 divisors (see below), whose sum is σ = 10416614. Its totient is φ = 4807656.

The previous prime is 7211483. The next prime is 7211509. The reversal of 7211493 is 3941127.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 66564 = 2673^2 + 258^2 .

It is not a de Polignac number, because 7211493 - 2⁶ = 7211429 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 (7211483) 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, 400630 + ... + 400647.

Almost surely, 2^7211493 is an apocalyptic number.

It is an amenable number.

7211493 is a deficient number, since it is larger than the sum of its proper divisors (3205121).

7211493 is a wasteful number, since it uses less digits than its factorization.

7211493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801283 (or 801280 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 7211493 is about 2685.4223131567. The cubic root of 7211493 is about 193.2005664631.

The spelling of 7211493 in words is "seven million, two hundred eleven thousand, four hundred ninety-three".