400539063 has 8 divisors (see below), whose sum is σ = 537003376. Its totient is φ = 265550400.

The previous prime is 400539059. The next prime is 400539079. The reversal of 400539063 is 360935004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400539063 - 2² = 400539059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400539063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400539563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368278 + ... + 369363.

It is an arithmetic number, because the mean of its divisors is an integer number (67125422).

Almost surely, 2^400539063 is an apocalyptic number.

400539063 is a deficient number, since it is larger than the sum of its proper divisors (136464313).

400539063 is a wasteful number, since it uses less digits than its factorization.

400539063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737825.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 400539063 is about 20013.4720376051. The cubic root of 400539063 is about 737.1371386653.

The spelling of 400539063 in words is "four hundred million, five hundred thirty-nine thousand, sixty-three".