400423053 has 16 divisors (see below), whose sum is σ = 537108480. Its totient is φ = 265349424.

The previous prime is 400423027. The next prime is 400423069. The reversal of 400423053 is 350324004.

It is a happy number.

It is not a de Polignac number, because 400423053 - 2²⁰ = 399374477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400423013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646578 + ... + 647196.

It is an arithmetic number, because the mean of its divisors is an integer number (33569280).

Almost surely, 2^400423053 is an apocalyptic number.

It is an amenable number.

400423053 is a deficient number, since it is larger than the sum of its proper divisors (136685427).

400423053 is a wasteful number, since it uses less digits than its factorization.

400423053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 400423053 is about 20010.5735300116. The cubic root of 400423053 is about 737.0659649690.

Adding to 400423053 its reverse (350324004), we get a palindrome (750747057).

The spelling of 400423053 in words is "four hundred million, four hundred twenty-three thousand, fifty-three".