39828493 has 4 divisors (see below), whose sum is σ = 40580028. Its totient is φ = 39076960.

The previous prime is 39828487. The next prime is 39828497. The reversal of 39828493 is 39482893.

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 33663204 + 6165289 = 5802^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 39828493 - 2²⁵ = 6274061 is a prime.

It is a super-3 number, since 3×39828493³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39828497) 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, 375688 + ... + 375793.

It is an arithmetic number, because the mean of its divisors is an integer number (10145007).

Almost surely, 2^39828493 is an apocalyptic number.

It is an amenable number.

39828493 is a deficient number, since it is larger than the sum of its proper divisors (751535).

39828493 is an equidigital number, since it uses as much as digits as its factorization.

39828493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751534.

The product of its digits is 373248, while the sum is 46.

The square root of 39828493 is about 6310.9819362758. The cubic root of 39828493 is about 341.5057010039.

The spelling of 39828493 in words is "thirty-nine million, eight hundred twenty-eight thousand, four hundred ninety-three".