40324661 has 4 divisors (see below), whose sum is σ = 43426572. Its totient is φ = 37222752.

The previous prime is 40324651. The next prime is 40324723. The reversal of 40324661 is 16642304.

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 17380561 + 22944100 = 4169^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 40324661 - 2⁶ = 40324597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40324661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40324601) 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, 1550936 + ... + 1550961.

It is an arithmetic number, because the mean of its divisors is an integer number (10856643).

Almost surely, 2^40324661 is an apocalyptic number.

It is an amenable number.

40324661 is a deficient number, since it is larger than the sum of its proper divisors (3101911).

40324661 is a wasteful number, since it uses less digits than its factorization.

40324661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101910.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40324661 is about 6350.1701552006. The cubic root of 40324661 is about 342.9179680693.

Adding to 40324661 its reverse (16642304), we get a palindrome (56966965).

The spelling of 40324661 in words is "forty million, three hundred twenty-four thousand, six hundred sixty-one".