400300423 has 4 divisors (see below), whose sum is σ = 400803480. Its totient is φ = 399797368.

The previous prime is 400300393. The next prime is 400300463. The reversal of 400300423 is 324003004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400300423 - 2¹³ = 400292231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400300397 and 400300406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400300463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250333 + ... + 251926.

It is an arithmetic number, because the mean of its divisors is an integer number (100200870).

Almost surely, 2^400300423 is an apocalyptic number.

400300423 is a deficient number, since it is larger than the sum of its proper divisors (503057).

400300423 is an equidigital number, since it uses as much as digits as its factorization.

400300423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503056.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400300423 is about 20007.5091653109. The cubic root of 400300423 is about 736.9907148661.

Adding to 400300423 its reverse (324003004), we get a palindrome (724303427).

The spelling of 400300423 in words is "four hundred million, three hundred thousand, four hundred twenty-three".