40802439 has 16 divisors (see below), whose sum is σ = 56010240. Its totient is φ = 26419640.

The previous prime is 40802423. The next prime is 40802441. The reversal of 40802439 is 93420804.

It is a happy number.

40802439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40802439 - 2⁴ = 40802423 is a prime.

40802439 is a modest number, since divided by 2439 gives 408 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40802459) 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 15 ways as a sum of consecutive naturals, for example, 311404 + ... + 311534.

It is an arithmetic number, because the mean of its divisors is an integer number (3500640).

Almost surely, 2^40802439 is an apocalyptic number.

40802439 is a deficient number, since it is larger than the sum of its proper divisors (15207801).

40802439 is an frugal number, since it uses more digits than its factorization.

40802439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40802439 is about 6387.6786863461. The cubic root of 40802439 is about 344.2669838978.

The spelling of 40802439 in words is "forty million, eight hundred two thousand, four hundred thirty-nine".