400003472460 has 144 divisors (see below), whose sum is σ = 1207213410816. Its totient is φ = 98903182464.

The previous prime is 400003472443. The next prime is 400003472503. The reversal of 400003472460 is 64274300004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 821559 + ... + 1214481.

It is an arithmetic number, because the mean of its divisors is an integer number (8383426464).

Almost surely, 2^400003472460 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 400003472460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603606705408).

400003472460 is an abundant number, since it is smaller than the sum of its proper divisors (807209938356).

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

400003472460 is a wasteful number, since it uses less digits than its factorization.

400003472460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393020 (or 392999 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 400003472460 its reverse (64274300004), we get a palindrome (464277772464).

The spelling of 400003472460 in words is "four hundred billion, three million, four hundred seventy-two thousand, four hundred sixty".