400453863 has 8 divisors (see below), whose sum is σ = 535656576. Its totient is φ = 266110200.

The previous prime is 400453843. The next prime is 400453873. The reversal of 400453863 is 368354004.

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

It is not a de Polignac number, because 400453863 - 2⁵ = 400453831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400453843) 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, 213673 + ... + 215538.

It is an arithmetic number, because the mean of its divisors is an integer number (66957072).

Almost surely, 2^400453863 is an apocalyptic number.

400453863 is a deficient number, since it is larger than the sum of its proper divisors (135202713).

400453863 is a wasteful number, since it uses less digits than its factorization.

400453863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429525.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 400453863 is about 20011.3433582056. The cubic root of 400453863 is about 737.0848686592.

The spelling of 400453863 in words is "four hundred million, four hundred fifty-three thousand, eight hundred sixty-three".