423435091 has 2 divisors, whose sum is σ = 423435092. Its totient is φ = 423435090.

The previous prime is 423435049. The next prime is 423435101. The reversal of 423435091 is 190534324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423435091 - 2⁹ = 423434579 is a prime.

It is not a weakly prime, because it can be changed into another prime (423432091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211717545 + 211717546.

It is an arithmetic number, because the mean of its divisors is an integer number (211717546).

Almost surely, 2^423435091 is an apocalyptic number.

423435091 is a deficient number, since it is larger than the sum of its proper divisors (1).

423435091 is an equidigital number, since it uses as much as digits as its factorization.

423435091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 423435091 is about 20577.5385068283. The cubic root of 423435091 is about 750.9233611095.

The spelling of 423435091 in words is "four hundred twenty-three million, four hundred thirty-five thousand, ninety-one".