400871241 has 32 divisors (see below), whose sum is σ = 609840000. Its totient is φ = 260112384.

The previous prime is 400871197. The next prime is 400871243. The reversal of 400871241 is 142178004.

It is not a de Polignac number, because 400871241 - 2¹⁹ = 400346953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400871243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520905 + ... + 521673.

It is an arithmetic number, because the mean of its divisors is an integer number (19057500).

Almost surely, 2^400871241 is an apocalyptic number.

It is an amenable number.

400871241 is a deficient number, since it is larger than the sum of its proper divisors (208968759).

400871241 is a wasteful number, since it uses less digits than its factorization.

400871241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 400871241 is about 20021.7691775727. The cubic root of 400871241 is about 737.3408583557.

It can be divided in two parts, 40087 and 1241, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 400871241 in words is "four hundred million, eight hundred seventy-one thousand, two hundred forty-one".