400426871 has 8 divisors (see below), whose sum is σ = 431607120. Its totient is φ = 369300672.

The previous prime is 400426861. The next prime is 400426889. The reversal of 400426871 is 178624004.

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

It is not a de Polignac number, because 400426871 - 2²² = 396232567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400426801) 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, 2600 + ... + 28418.

It is an arithmetic number, because the mean of its divisors is an integer number (53950890).

Almost surely, 2^400426871 is an apocalyptic number.

400426871 is a deficient number, since it is larger than the sum of its proper divisors (31180249).

400426871 is a wasteful number, since it uses less digits than its factorization.

400426871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27025.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 400426871 is about 20010.6689293487. The cubic root of 400426871 is about 737.0683075822.

The spelling of 400426871 in words is "four hundred million, four hundred twenty-six thousand, eight hundred seventy-one".