39928269 has 4 divisors (see below), whose sum is σ = 53237696. Its totient is φ = 26618844.

The previous prime is 39928267. The next prime is 39928297. The reversal of 39928269 is 96282993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39928269 - 2¹ = 39928267 is a prime.

It is a super-2 number, since 2×39928269² = 3188533330672722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39928261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6654709 + ... + 6654714.

It is an arithmetic number, because the mean of its divisors is an integer number (13309424).

Almost surely, 2^39928269 is an apocalyptic number.

It is an amenable number.

39928269 is a deficient number, since it is larger than the sum of its proper divisors (13309427).

39928269 is a wasteful number, since it uses less digits than its factorization.

39928269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309426.

The product of its digits is 419904, while the sum is 48.

The square root of 39928269 is about 6318.8819422426. The cubic root of 39928269 is about 341.7906365390.

The spelling of 39928269 in words is "thirty-nine million, nine hundred twenty-eight thousand, two hundred sixty-nine".