401862885 has 16 divisors (see below), whose sum is σ = 643346496. Its totient is φ = 214204928.

The previous prime is 401862871. The next prime is 401862887. The reversal of 401862885 is 588268104.

It is a cyclic number.

It is not a de Polignac number, because 401862885 - 2⁴ = 401862869 is a prime.

It is a super-2 number, since 2×401862885² = 322987556681046450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401862887) 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, 23797 + ... + 37013.

It is an arithmetic number, because the mean of its divisors is an integer number (40209156).

Almost surely, 2^401862885 is an apocalyptic number.

It is an amenable number.

401862885 is a deficient number, since it is larger than the sum of its proper divisors (241483611).

401862885 is a wasteful number, since it uses less digits than its factorization.

401862885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15252.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 401862885 is about 20046.5180268295. The cubic root of 401862885 is about 737.9483498051.

It can be divided in two parts, 40186 and 2885, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 401862885 in words is "four hundred one million, eight hundred sixty-two thousand, eight hundred eighty-five".