400210404 has 48 divisors (see below), whose sum is σ = 1027177536. Its totient is φ = 121271040.

The previous prime is 400210387. The next prime is 400210429. The reversal of 400210404 is 404012004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3444 + ... + 28500.

It is an arithmetic number, because the mean of its divisors is an integer number (21399532).

Almost surely, 2^400210404 is an apocalyptic number.

400210404 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400210404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513588768).

400210404 is an abundant number, since it is smaller than the sum of its proper divisors (626967132).

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

400210404 is a wasteful number, since it uses less digits than its factorization.

400210404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25097 (or 25073 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 400210404 is about 20005.2594084656. The cubic root of 400210404 is about 736.9354662437.

Adding to 400210404 its reverse (404012004), we get a palindrome (804222408).

The spelling of 400210404 in words is "four hundred million, two hundred ten thousand, four hundred four".