400141188 has 96 divisors (see below), whose sum is σ = 1079568000. Its totient is φ = 128016000.

The previous prime is 400141177. The next prime is 400141207. The reversal of 400141188 is 881141004.

It is a super-2 number, since 2×400141188² = 320225940668102688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785878 + ... + 786386.

It is an arithmetic number, because the mean of its divisors is an integer number (11245500).

Almost surely, 2^400141188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400141188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539784000).

400141188 is an abundant number, since it is smaller than the sum of its proper divisors (679426812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400141188 is a wasteful number, since it uses less digits than its factorization.

400141188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 400141188 is about 20003.5293885854. The cubic root of 400141188 is about 736.8929797036.

The spelling of 400141188 in words is "four hundred million, one hundred forty-one thousand, one hundred eighty-eight".