32440413 has 4 divisors (see below), whose sum is σ = 43253888. Its totient is φ = 21626940.

The previous prime is 32440409. The next prime is 32440417. The reversal of 32440413 is 31404423.

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 an interprime number because it is at equal distance from previous prime (32440409) and next prime (32440417).

It is not a de Polignac number, because 32440413 - 2² = 32440409 is a prime.

It is a super-2 number, since 2×32440413² = 2104760791221138, 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 32440413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32440417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5406733 + ... + 5406738.

It is an arithmetic number, because the mean of its divisors is an integer number (10813472).

Almost surely, 2^32440413 is an apocalyptic number.

It is an amenable number.

32440413 is a deficient number, since it is larger than the sum of its proper divisors (10813475).

32440413 is a wasteful number, since it uses less digits than its factorization.

32440413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10813474.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 32440413 is about 5695.6486022226. The cubic root of 32440413 is about 318.9300626613.

Adding to 32440413 its reverse (31404423), we get a palindrome (63844836).

The spelling of 32440413 in words is "thirty-two million, four hundred forty thousand, four hundred thirteen".