423459819 has 24 divisors (see below), whose sum is σ = 638269632. Its totient is φ = 280548360.

The previous prime is 423459809. The next prime is 423459823. The reversal of 423459819 is 918954324.

423459819 is a `hidden beast` number, since 42 + 3 + 4 + 598 + 19 = 666.

It is not a de Polignac number, because 423459819 - 2¹⁵ = 423427051 is a prime.

It is a super-2 number, since 2×423459819² = 358636436615025522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423459809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34264 + ... + 44954.

It is an arithmetic number, because the mean of its divisors is an integer number (26594568).

Almost surely, 2^423459819 is an apocalyptic number.

423459819 is a deficient number, since it is larger than the sum of its proper divisors (214809813).

423459819 is a wasteful number, since it uses less digits than its factorization.

423459819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10869 (or 10857 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 423459819 is about 20578.1393473754. The cubic root of 423459819 is about 750.9379784396.

The spelling of 423459819 in words is "four hundred twenty-three million, four hundred fifty-nine thousand, eight hundred nineteen".