400071130 has 8 divisors (see below), whose sum is σ = 720128052. Its totient is φ = 160028448.

The previous prime is 400071127. The next prime is 400071169. The reversal of 400071130 is 31170004.

It can be written as a sum of positive squares in 2 ways, for example, as 398681089 + 1390041 = 19967^2 + 1179^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20003547 + ... + 20003566.

Almost surely, 2^400071130 is an apocalyptic number.

400071130 is a deficient number, since it is larger than the sum of its proper divisors (320056922).

400071130 is a wasteful number, since it uses less digits than its factorization.

400071130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40007120.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 400071130 is about 20001.7781709527. The cubic root of 400071130 is about 736.8499713330.

The spelling of 400071130 in words is "four hundred million, seventy-one thousand, one hundred thirty".