2123401393 has 8 divisors (see below), whose sum is σ = 2132832680. Its totient is φ = 2113983360.

The previous prime is 2123401349. The next prime is 2123401403. The reversal of 2123401393 is 3931043212.

It can be written as a sum of positive squares in 4 ways, for example, as 2614689 + 2120786704 = 1617^2 + 46052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123401393 - 2²⁹ = 1586530481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123401793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446653 + ... + 451381.

It is an arithmetic number, because the mean of its divisors is an integer number (266604085).

Almost surely, 2^2123401393 is an apocalyptic number.

It is an amenable number.

2123401393 is a deficient number, since it is larger than the sum of its proper divisors (9431287).

2123401393 is a wasteful number, since it uses less digits than its factorization.

2123401393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2123401393 is about 46080.3796967864. The cubic root of 2123401393 is about 1285.3183247464.

The spelling of 2123401393 in words is "two billion, one hundred twenty-three million, four hundred one thousand, three hundred ninety-three".