400345110 has 48 divisors (see below), whose sum is σ = 1135527120. Its totient is φ = 97053120.

The previous prime is 400345109. The next prime is 400345139. The reversal of 400345110 is 11543004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201205 + ... + 203184.

It is an arithmetic number, because the mean of its divisors is an integer number (23656815).

Almost surely, 2^400345110 is an apocalyptic number.

400345110 is an abundant number, since it is smaller than the sum of its proper divisors (735182010).

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

400345110 is a wasteful number, since it uses less digits than its factorization.

400345110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404413 (or 404410 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 400345110 is about 20008.6258898506. The cubic root of 400345110 is about 737.0181381685.

Adding to 400345110 its reverse (11543004), we get a palindrome (411888114).

The spelling of 400345110 in words is "four hundred million, three hundred forty-five thousand, one hundred ten".