405089923 has 16 divisors (see below), whose sum is σ = 491097600. Its totient is φ = 326192256.

The previous prime is 405089903. The next prime is 405089939. The reversal of 405089923 is 329980504.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 405089923 - 2⁹ = 405089411 is a prime.

It is a super-2 number, since 2×405089923² = 328195691432291858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405089903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68440 + ... + 74122.

It is an arithmetic number, because the mean of its divisors is an integer number (30693600).

Almost surely, 2^405089923 is an apocalyptic number.

405089923 is a deficient number, since it is larger than the sum of its proper divisors (86007677).

405089923 is a wasteful number, since it uses less digits than its factorization.

405089923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 405089923 is about 20126.8458283955. The cubic root of 405089923 is about 739.9183760713.

The spelling of 405089923 in words is "four hundred five million, eighty-nine thousand, nine hundred twenty-three".