40009339 has 4 divisors (see below), whose sum is σ = 40064656. Its totient is φ = 39954024.

The previous prime is 40009337. The next prime is 40009363. The reversal of 40009339 is 93390004.

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

It is a cyclic number.

It is not a de Polignac number, because 40009339 - 2¹ = 40009337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40009337) 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, 26559 + ... + 28024.

It is an arithmetic number, because the mean of its divisors is an integer number (10016164).

Almost surely, 2^40009339 is an apocalyptic number.

40009339 is a deficient number, since it is larger than the sum of its proper divisors (55317).

40009339 is an equidigital number, since it uses as much as digits as its factorization.

40009339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55316.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 40009339 is about 6325.2935900241. The cubic root of 40009339 is about 342.0218030398.

The spelling of 40009339 in words is "forty million, nine thousand, three hundred thirty-nine".