403423399 has 2 divisors, whose sum is σ = 403423400. Its totient is φ = 403423398.

The previous prime is 403423387. The next prime is 403423421. The reversal of 403423399 is 993324304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403423399 - 2¹⁹ = 402899111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403423309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201711699 + 201711700.

It is an arithmetic number, because the mean of its divisors is an integer number (201711700).

Almost surely, 2^403423399 is an apocalyptic number.

403423399 is a deficient number, since it is larger than the sum of its proper divisors (1).

403423399 is an equidigital number, since it uses as much as digits as its factorization.

403423399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 403423399 is about 20085.4026347494. The cubic root of 403423399 is about 738.9023164257.

The spelling of 403423399 in words is "four hundred three million, four hundred twenty-three thousand, three hundred ninety-nine".