40404270 has 64 divisors (see below), whose sum is σ = 100590336. Its totient is φ = 10379520.

The previous prime is 40404269. The next prime is 40404271. The reversal of 40404270 is 7240404.

It is an interprime number because it is at equal distance from previous prime (40404269) and next prime (40404271).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131457 + ... + 131763.

It is an arithmetic number, because the mean of its divisors is an integer number (1571724).

Almost surely, 2^40404270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40404270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50295168).

40404270 is an abundant number, since it is smaller than the sum of its proper divisors (60186066).

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

40404270 is a wasteful number, since it uses less digits than its factorization.

40404270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40404270 is about 6356.4353217822. The cubic root of 40404270 is about 343.1434827685.

Adding to 40404270 its reverse (7240404), we get a palindrome (47644674).

The spelling of 40404270 in words is "forty million, four hundred four thousand, two hundred seventy".