400071376 has 20 divisors (see below), whose sum is σ = 783850500. Its totient is φ = 197787392.

The previous prime is 400071349. The next prime is 400071457. The reversal of 400071376 is 673170004.

It can be written as a sum of positive squares in 2 ways, for example, as 282912400 + 117158976 = 16820^2 + 10824^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139051 + ... + 141898.

It is an arithmetic number, because the mean of its divisors is an integer number (39192525).

Almost surely, 2^400071376 is an apocalyptic number.

It is an amenable number.

400071376 is a deficient number, since it is larger than the sum of its proper divisors (383779124).

400071376 is a wasteful number, since it uses less digits than its factorization.

400071376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281046 (or 281040 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 400071376 is about 20001.7843204050. The cubic root of 400071376 is about 736.8501223603.

The spelling of 400071376 in words is "four hundred million, seventy-one thousand, three hundred seventy-six".