40039273 has 4 divisors (see below), whose sum is σ = 40167508. Its totient is φ = 39911040.

The previous prime is 40039249. The next prime is 40039313. The reversal of 40039273 is 37293004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9535744 + 30503529 = 3088^2 + 5523^2 .

It is a cyclic number.

It is not a de Polignac number, because 40039273 - 2¹⁷ = 39908201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40031273) 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, 63648 + ... + 64273.

It is an arithmetic number, because the mean of its divisors is an integer number (10041877).

Almost surely, 2^40039273 is an apocalyptic number.

It is an amenable number.

40039273 is a deficient number, since it is larger than the sum of its proper divisors (128235).

40039273 is a wasteful number, since it uses less digits than its factorization.

40039273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128234.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 40039273 is about 6327.6593618810. The cubic root of 40039273 is about 342.1070792002.

The spelling of 40039273 in words is "forty million, thirty-nine thousand, two hundred seventy-three".