40799239 has 4 divisors (see below), whose sum is σ = 43937656. Its totient is φ = 37660824.

The previous prime is 40799221. The next prime is 40799249. The reversal of 40799239 is 93299704.

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 40799239 - 2¹¹ = 40797191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40799195 and 40799204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40799249) 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, 1569189 + ... + 1569214.

It is an arithmetic number, because the mean of its divisors is an integer number (10984414).

Almost surely, 2^40799239 is an apocalyptic number.

40799239 is a deficient number, since it is larger than the sum of its proper divisors (3138417).

40799239 is a wasteful number, since it uses less digits than its factorization.

40799239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138416.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 40799239 is about 6387.4281992051. The cubic root of 40799239 is about 344.2579837565.

The spelling of 40799239 in words is "forty million, seven hundred ninety-nine thousand, two hundred thirty-nine".