401071887 has 24 divisors (see below), whose sum is σ = 584481456. Its totient is φ = 265015296.

The previous prime is 401071807. The next prime is 401071903. The reversal of 401071887 is 788170104.

It is not a de Polignac number, because 401071887 - 2¹⁰ = 401070863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401071807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 732948 + ... + 733494.

It is an arithmetic number, because the mean of its divisors is an integer number (24353394).

Almost surely, 2^401071887 is an apocalyptic number.

401071887 is a deficient number, since it is larger than the sum of its proper divisors (183409569).

401071887 is a wasteful number, since it uses less digits than its factorization.

401071887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 401071887 is about 20026.7792467985. The cubic root of 401071887 is about 737.4638569667.

The spelling of 401071887 in words is "four hundred one million, seventy-one thousand, eight hundred eighty-seven".