400253563 has 8 divisors (see below), whose sum is σ = 435848400. Its totient is φ = 366111648.

The previous prime is 400253549. The next prime is 400253591. The reversal of 400253563 is 365352004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400253563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400253543) 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 7 ways as a sum of consecutive naturals, for example, 362656 + ... + 363757.

It is an arithmetic number, because the mean of its divisors is an integer number (54481050).

Almost surely, 2^400253563 is an apocalyptic number.

400253563 is a deficient number, since it is larger than the sum of its proper divisors (35594837).

400253563 is a wasteful number, since it uses less digits than its factorization.

400253563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726461.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 400253563 is about 20006.3380707215. The cubic root of 400253563 is about 736.9619558553.

The spelling of 400253563 in words is "four hundred million, two hundred fifty-three thousand, five hundred sixty-three".