39828969 has 8 divisors (see below), whose sum is σ = 59005920. Its totient is φ = 26552628.

The previous prime is 39828949. The next prime is 39828973. The reversal of 39828969 is 96982893.

It is not a de Polignac number, because 39828969 - 2⁸ = 39828713 is a prime.

It is a super-2 number, since 2×39828969² = 3172693543205922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39828949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737547 + ... + 737600.

It is an arithmetic number, because the mean of its divisors is an integer number (7375740).

Almost surely, 2^39828969 is an apocalyptic number.

It is an amenable number.

39828969 is a deficient number, since it is larger than the sum of its proper divisors (19176951).

39828969 is a wasteful number, since it uses less digits than its factorization.

39828969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475156 (or 1475150 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 39828969 is about 6311.0196482027. The cubic root of 39828969 is about 341.5070614710.

The spelling of 39828969 in words is "thirty-nine million, eight hundred twenty-eight thousand, nine hundred sixty-nine".