406168023 has 4 divisors (see below), whose sum is σ = 541557368. Its totient is φ = 270778680.

The previous prime is 406168019. The next prime is 406168039. The reversal of 406168023 is 320861604.

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

It is not a de Polignac number, because 406168023 - 2² = 406168019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406168013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67694668 + ... + 67694673.

It is an arithmetic number, because the mean of its divisors is an integer number (135389342).

Almost surely, 2^406168023 is an apocalyptic number.

406168023 is a deficient number, since it is larger than the sum of its proper divisors (135389345).

406168023 is a wasteful number, since it uses less digits than its factorization.

406168023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135389344.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 406168023 is about 20153.6106690588. The cubic root of 406168023 is about 740.5741970244.

The spelling of 406168023 in words is "four hundred six million, one hundred sixty-eight thousand, twenty-three".