10400030440 has 16 divisors (see below), whose sum is σ = 23400068580. Its totient is φ = 4160012160.

The previous prime is 10400030429. The next prime is 10400030441. The reversal of 10400030440 is 4403000401.

It can be written as a sum of positive squares in 2 ways, for example, as 10397065156 + 2965284 = 101966^2 + 1722^2 .

It is not an unprimeable number, because it can be changed into a prime (10400030441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130000341 + ... + 130000420.

Almost surely, 2^10400030440 is an apocalyptic number.

10400030440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10400030440 is an abundant number, since it is smaller than the sum of its proper divisors (13000038140).

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

10400030440 is a wasteful number, since it uses less digits than its factorization.

10400030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260000772 (or 260000768 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 10400030440 its reverse (4403000401), we get a palindrome (14803030841).

The spelling of 10400030440 in words is "ten billion, four hundred million, thirty thousand, four hundred forty".