40404100 has 72 divisors (see below), whose sum is σ = 99868608. Its totient is φ = 14044800.

The previous prime is 40404097. The next prime is 40404101. The reversal of 40404100 is 140404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40404101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24502 + ... + 26098.

It is an arithmetic number, because the mean of its divisors is an integer number (1387064).

Almost surely, 2^40404100 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 40404100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49934304).

40404100 is an abundant number, since it is smaller than the sum of its proper divisors (59464508).

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

40404100 is a wasteful number, since it uses less digits than its factorization.

40404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1638 counting only the distinct ones).

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

The square root of 40404100 is about 6356.4219494933. The cubic root of 40404100 is about 343.1430015119.

Adding to 40404100 its reverse (140404), we get a palindrome (40544504).

It can be divided in two parts, 40404 and 100, that added together give a palindrome (40504).

The spelling of 40404100 in words is "forty million, four hundred four thousand, one hundred".