400852869 has 8 divisors (see below), whose sum is σ = 535631712. Its totient is φ = 266654640.

The previous prime is 400852867. The next prime is 400852883. The reversal of 400852869 is 968258004.

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

It is not a de Polignac number, because 400852869 - 2¹ = 400852867 is a prime.

It is a super-2 number, since 2×400852869² = 321366045171062322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400852869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400852867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143539 + ... + 146304.

It is an arithmetic number, because the mean of its divisors is an integer number (66953964).

Almost surely, 2^400852869 is an apocalyptic number.

It is an amenable number.

400852869 is a deficient number, since it is larger than the sum of its proper divisors (134778843).

400852869 is a wasteful number, since it uses less digits than its factorization.

400852869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290307.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 400852869 is about 20021.3103717014. The cubic root of 400852869 is about 737.3295940296.

The spelling of 400852869 in words is "four hundred million, eight hundred fifty-two thousand, eight hundred sixty-nine".