409657423 has 32 divisors (see below), whose sum is σ = 504627200. Its totient is φ = 324795744.

The previous prime is 409657411. The next prime is 409657427. The reversal of 409657423 is 324756904.

It is a happy number.

It is not a de Polignac number, because 409657423 - 2⁹ = 409656911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409657427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1334236 + ... + 1334542.

It is an arithmetic number, because the mean of its divisors is an integer number (15769600).

Almost surely, 2^409657423 is an apocalyptic number.

409657423 is a deficient number, since it is larger than the sum of its proper divisors (94969777).

409657423 is a wasteful number, since it uses less digits than its factorization.

409657423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 409657423 is about 20239.9956274699. The cubic root of 409657423 is about 742.6889166985.

The spelling of 409657423 in words is "four hundred nine million, six hundred fifty-seven thousand, four hundred twenty-three".