423609698 has 4 divisors (see below), whose sum is σ = 635414550. Its totient is φ = 211804848.

The previous prime is 423609671. The next prime is 423609701. The reversal of 423609698 is 896906324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 392951329 + 30658369 = 19823^2 + 5537^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105902423 + ... + 105902426.

Almost surely, 2^423609698 is an apocalyptic number.

423609698 is a deficient number, since it is larger than the sum of its proper divisors (211804852).

423609698 is a wasteful number, since it uses less digits than its factorization.

423609698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211804851.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 423609698 is about 20581.7807295676. The cubic root of 423609698 is about 751.0265634341.

The spelling of 423609698 in words is "four hundred twenty-three million, six hundred nine thousand, six hundred ninety-eight".