401871005 has 16 divisors (see below), whose sum is σ = 492666624. Its totient is φ = 314616960.

The previous prime is 401870983. The next prime is 401871013. The reversal of 401871005 is 500178104.

It is not a de Polignac number, because 401871005 - 2¹² = 401866909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44504 + ... + 52766.

It is an arithmetic number, because the mean of its divisors is an integer number (30791664).

Almost surely, 2^401871005 is an apocalyptic number.

It is an amenable number.

401871005 is a deficient number, since it is larger than the sum of its proper divisors (90795619).

401871005 is a wasteful number, since it uses less digits than its factorization.

401871005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 401871005 is about 20046.7205547441. The cubic root of 401871005 is about 737.9533200744.

The spelling of 401871005 in words is "four hundred one million, eight hundred seventy-one thousand, five".