39828919 has 12 divisors (see below), whose sum is σ = 44434936. Its totient is φ = 35487648.

The previous prime is 39828911. The next prime is 39828949. The reversal of 39828919 is 91982893.

It is not a de Polignac number, because 39828919 - 2³ = 39828911 is a prime.

It is a super-2 number, since 2×39828919² = 3172685577417122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39828911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9112 + ... + 12754.

Almost surely, 2^39828919 is an apocalyptic number.

39828919 is a deficient number, since it is larger than the sum of its proper divisors (4606017).

39828919 is a wasteful number, since it uses less digits than its factorization.

39828919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3685 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 39828919 is about 6311.0156868764. The cubic root of 39828919 is about 341.5069185653.

The spelling of 39828919 in words is "thirty-nine million, eight hundred twenty-eight thousand, nine hundred nineteen".