423379393 has 2 divisors, whose sum is σ = 423379394. Its totient is φ = 423379392.

The previous prime is 423379391. The next prime is 423379399. The reversal of 423379393 is 393973324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364504464 + 58874929 = 19092^2 + 7673^2 .

It is a cyclic number.

It is not a de Polignac number, because 423379393 - 2¹ = 423379391 is a prime.

It is a super-2 number, since 2×423379393² = 358500220834096898, which contains 22 as substring.

Together with 423379391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (423379391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211689696 + 211689697.

It is an arithmetic number, because the mean of its divisors is an integer number (211689697).

Almost surely, 2^423379393 is an apocalyptic number.

It is an amenable number.

423379393 is a deficient number, since it is larger than the sum of its proper divisors (1).

423379393 is an equidigital number, since it uses as much as digits as its factorization.

423379393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 43.

The square root of 423379393 is about 20576.1850934521. The cubic root of 423379393 is about 750.8904345648.

The spelling of 423379393 in words is "four hundred twenty-three million, three hundred seventy-nine thousand, three hundred ninety-three".