40609331 has 8 divisors (see below), whose sum is σ = 46696704. Its totient is φ = 34593480.

The previous prime is 40609321. The next prime is 40609339. The reversal of 40609331 is 13390604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40609331 - 2¹⁴ = 40592947 is a prime.

It is a super-2 number, since 2×40609331² = 3298235528535122, which contains 22 as substring.

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 40609331.

It is not an unprimeable number, because it can be changed into a prime (40609339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16655 + ... + 18936.

It is an arithmetic number, because the mean of its divisors is an integer number (5837088).

Almost surely, 2^40609331 is an apocalyptic number.

40609331 is a deficient number, since it is larger than the sum of its proper divisors (6087373).

40609331 is a wasteful number, since it uses less digits than its factorization.

40609331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35761.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 40609331 is about 6372.5450959566. The cubic root of 40609331 is about 343.7230142562.

Adding to 40609331 its reverse (13390604), we get a palindrome (53999935).

The spelling of 40609331 in words is "forty million, six hundred nine thousand, three hundred thirty-one".