406343623 has 24 divisors (see below), whose sum is σ = 489557952. Its totient is φ = 336075264.

The previous prime is 406343591. The next prime is 406343627. The reversal of 406343623 is 326343604.

It is not a de Polignac number, because 406343623 - 2⁵ = 406343591 is a prime.

It is a super-2 number, since 2×406343623² = 330230279905532258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406343627) 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, 166911 + ... + 169327.

It is an arithmetic number, because the mean of its divisors is an integer number (20398248).

Almost surely, 2^406343623 is an apocalyptic number.

406343623 is a deficient number, since it is larger than the sum of its proper divisors (83214329).

406343623 is a wasteful number, since it uses less digits than its factorization.

406343623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551 (or 2544 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

The square root of 406343623 is about 20157.9667377442. The cubic root of 406343623 is about 740.6809066333.

The spelling of 406343623 in words is "four hundred six million, three hundred forty-three thousand, six hundred twenty-three".