400378116 has 24 divisors (see below), whose sum is σ = 941038560. Its totient is φ = 132484672.

The previous prime is 400378109. The next prime is 400378129. The reversal of 400378116 is 611873004.

It is a happy number.

It is a super-3 number, since 3×400378116³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120126 + ... + 123413.

It is an arithmetic number, because the mean of its divisors is an integer number (39209940).

Almost surely, 2^400378116 is an apocalyptic number.

It is an amenable number.

400378116 is an abundant number, since it is smaller than the sum of its proper divisors (540660444).

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

400378116 is a wasteful number, since it uses less digits than its factorization.

400378116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243683 (or 243681 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 400378116 is about 20009.4506671223. The cubic root of 400378116 is about 737.0383918210.

The spelling of 400378116 in words is "four hundred million, three hundred seventy-eight thousand, one hundred sixteen".