40055039 has 4 divisors (see below), whose sum is σ = 40068624. Its totient is φ = 40041456.

The previous prime is 40055017. The next prime is 40055047. The reversal of 40055039 is 93055004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40055039 - 2¹⁶ = 39989503 is a prime.

It is a super-2 number, since 2×40055039² = 3208812298583042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40054999 and 40055017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055089) 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, 302 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (10017156).

Almost surely, 2^40055039 is an apocalyptic number.

40055039 is a deficient number, since it is larger than the sum of its proper divisors (13585).

40055039 is an equidigital number, since it uses as much as digits as its factorization.

40055039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13584.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 40055039 is about 6328.9050395783. The cubic root of 40055039 is about 342.1519763892.

The spelling of 40055039 in words is "forty million, fifty-five thousand, thirty-nine".