2621212393 has 4 divisors (see below), whose sum is σ = 2759170960. Its totient is φ = 2483253828.

The previous prime is 2621212343. The next prime is 2621212397. The reversal of 2621212393 is 3932121262.

2621212393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2621212393 - 2¹⁷ = 2621081321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621212397) 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, 68979255 + ... + 68979292.

It is an arithmetic number, because the mean of its divisors is an integer number (689792740).

Almost surely, 2^2621212393 is an apocalyptic number.

It is an amenable number.

2621212393 is a deficient number, since it is larger than the sum of its proper divisors (137958567).

2621212393 is a wasteful number, since it uses less digits than its factorization.

2621212393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137958566.

The product of its digits is 7776, while the sum is 31.

The square root of 2621212393 is about 51197.7772271414. Note that the first 3 decimals coincide. The cubic root of 2621212393 is about 1378.7982945070.

The spelling of 2621212393 in words is "two billion, six hundred twenty-one million, two hundred twelve thousand, three hundred ninety-three".