40400004010 has 8 divisors (see below), whose sum is σ = 72720007236. Its totient is φ = 16160001600.

The previous prime is 40400003993. The next prime is 40400004079. The reversal of 40400004010 is 1040000404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37795636921 + 2604367089 = 194411^2 + 51033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020000191 + ... + 2020000210.

Almost surely, 2^40400004010 is an apocalyptic number.

40400004010 is a deficient number, since it is larger than the sum of its proper divisors (32320003226).

40400004010 is a wasteful number, since it uses less digits than its factorization.

40400004010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040000408.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40400004010 its reverse (1040000404), we get a palindrome (41440004414).

The spelling of 40400004010 in words is "forty billion, four hundred million, four thousand, ten".