405869923 has 8 divisors (see below), whose sum is σ = 408704400. Its totient is φ = 403045248.

The previous prime is 405869921. The next prime is 405869969. The reversal of 405869923 is 329968504.

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

It is a cyclic number.

It is not a de Polignac number, because 405869923 - 2¹ = 405869921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405869921) 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, 93168 + ... + 97426.

It is an arithmetic number, because the mean of its divisors is an integer number (51088050).

Almost surely, 2^405869923 is an apocalyptic number.

405869923 is a deficient number, since it is larger than the sum of its proper divisors (2834477).

405869923 is a wasteful number, since it uses less digits than its factorization.

405869923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 405869923 is about 20146.2136144736. The cubic root of 405869923 is about 740.3929754720.

The spelling of 405869923 in words is "four hundred five million, eight hundred sixty-nine thousand, nine hundred twenty-three".