40039303 has 4 divisors (see below), whose sum is σ = 40119408. Its totient is φ = 39959200.

The previous prime is 40039249. The next prime is 40039313. The reversal of 40039303 is 30393004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40039303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40039313) 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, 39298 + ... + 40303.

It is an arithmetic number, because the mean of its divisors is an integer number (10029852).

Almost surely, 2^40039303 is an apocalyptic number.

40039303 is a deficient number, since it is larger than the sum of its proper divisors (80105).

40039303 is an equidigital number, since it uses as much as digits as its factorization.

40039303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80104.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 40039303 is about 6327.6617324253. The cubic root of 40039303 is about 342.1071646430.

The spelling of 40039303 in words is "forty million, thirty-nine thousand, three hundred three".