40382609 has 4 divisors (see below), whose sum is σ = 41067120. Its totient is φ = 39698100.

The previous prime is 40382603. The next prime is 40382627. The reversal of 40382609 is 90628304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40382609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40382603) 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, 342167 + ... + 342284.

It is an arithmetic number, because the mean of its divisors is an integer number (10266780).

Almost surely, 2^40382609 is an apocalyptic number.

It is an amenable number.

40382609 is a deficient number, since it is larger than the sum of its proper divisors (684511).

40382609 is an equidigital number, since it uses as much as digits as its factorization.

40382609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684510.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 40382609 is about 6354.7312295643. The cubic root of 40382609 is about 343.0821513000.

The spelling of 40382609 in words is "forty million, three hundred eighty-two thousand, six hundred nine".