400503995 has 8 divisors (see below), whose sum is σ = 480713184. Its totient is φ = 320330944.

The previous prime is 400503989. The next prime is 400503997. The reversal of 400503995 is 599305004.

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 400503995 - 2⁶ = 400503931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400503997) 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, 33962 + ... + 44208.

It is an arithmetic number, because the mean of its divisors is an integer number (60089148).

Almost surely, 2^400503995 is an apocalyptic number.

400503995 is a deficient number, since it is larger than the sum of its proper divisors (80209189).

400503995 is a wasteful number, since it uses less digits than its factorization.

400503995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 400503995 is about 20012.5959085772. The cubic root of 400503995 is about 737.1156254248.

Adding to 400503995 its reverse (599305004), we get a palindrome (999808999).

The spelling of 400503995 in words is "four hundred million, five hundred three thousand, nine hundred ninety-five".