40400400404 has 96 divisors (see below), whose sum is σ = 92079783936. Its totient is φ = 15072140160.

The previous prime is 40400400401. The next prime is 40400400409.

40400400404 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400400401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560429 + ... + 628395.

It is an arithmetic number, because the mean of its divisors is an integer number (959164416).

Almost surely, 2^40400400404 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 40400400404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46039891968).

40400400404 is an abundant number, since it is smaller than the sum of its proper divisors (51679383532).

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

40400400404 is a wasteful number, since it uses less digits than its factorization.

40400400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68085 (or 68083 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The spelling of 40400400404 in words is "forty billion, four hundred million, four hundred thousand, four hundred four".