40411009 has 4 divisors (see below), whose sum is σ = 40811220. Its totient is φ = 40010800.

The previous prime is 40411001. The next prime is 40411039. The reversal of 40411009 is 90011404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37271025 + 3139984 = 6105^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 40411009 - 2³ = 40411001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40411001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199954 + ... + 200155.

It is an arithmetic number, because the mean of its divisors is an integer number (10202805).

Almost surely, 2^40411009 is an apocalyptic number.

It is an amenable number.

40411009 is a deficient number, since it is larger than the sum of its proper divisors (400211).

40411009 is a wasteful number, since it uses less digits than its factorization.

40411009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400210.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 40411009 is about 6356.9653923865. The cubic root of 40411009 is about 343.1625592620.

It can be divided in two parts, 4041 and 1009, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 40411009 in words is "forty million, four hundred eleven thousand, nine".