423490309 has 8 divisors (see below), whose sum is σ = 464336928. Its totient is φ = 383034960.

The previous prime is 423490307. The next prime is 423490313. The reversal of 423490309 is 903094324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423490309 - 2¹ = 423490307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423490303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95547 + ... + 99880.

It is an arithmetic number, because the mean of its divisors is an integer number (58042116).

Almost surely, 2^423490309 is an apocalyptic number.

It is an amenable number.

423490309 is a deficient number, since it is larger than the sum of its proper divisors (40846619).

423490309 is a wasteful number, since it uses less digits than its factorization.

423490309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195635.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 423490309 is about 20578.8801687555. The cubic root of 423490309 is about 750.9560010464.

The spelling of 423490309 in words is "four hundred twenty-three million, four hundred ninety thousand, three hundred nine".