400575023 has 2 divisors, whose sum is σ = 400575024. Its totient is φ = 400575022.

The previous prime is 400575011. The next prime is 400575041. The reversal of 400575023 is 320575004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400575023 - 2⁶ = 400574959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400574983 and 400575001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400575053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200287511 + 200287512.

It is an arithmetic number, because the mean of its divisors is an integer number (200287512).

Almost surely, 2^400575023 is an apocalyptic number.

400575023 is a deficient number, since it is larger than the sum of its proper divisors (1).

400575023 is an equidigital number, since it uses as much as digits as its factorization.

400575023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 400575023 is about 20014.3704122813. The cubic root of 400575023 is about 737.1591978190.

The spelling of 400575023 in words is "four hundred million, five hundred seventy-five thousand, twenty-three".