40400400444 has 24 divisors (see below), whose sum is σ = 97308492288. Its totient is φ = 13032387120.

The previous prime is 40400400437. The next prime is 40400400497. The reversal of 40400400444 is 44400400404.

It is a super-4 number, since 4×40400400444⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54301242 + ... + 54301985.

It is an arithmetic number, because the mean of its divisors is an integer number (4054520512).

Almost surely, 2^40400400444 is an apocalyptic number.

It is an amenable number.

40400400444 is an abundant number, since it is smaller than the sum of its proper divisors (56908091844).

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

40400400444 is a wasteful number, since it uses less digits than its factorization.

40400400444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108603265 (or 108603263 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40400400444 its reverse (44400400404), we get a palindrome (84800800848).

The spelling of 40400400444 in words is "forty billion, four hundred million, four hundred thousand, four hundred forty-four".