39998704 has 10 divisors (see below), whose sum is σ = 77497520. Its totient is φ = 19999344.

The previous prime is 39998701. The next prime is 39998713. The reversal of 39998704 is 40789993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998701) 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 as a sum of consecutive naturals, namely, 1249944 + ... + 1249975.

It is an arithmetic number, because the mean of its divisors is an integer number (7749752).

Almost surely, 2^39998704 is an apocalyptic number.

It is an amenable number.

39998704 is a deficient number, since it is larger than the sum of its proper divisors (37498816).

39998704 is a wasteful number, since it uses less digits than its factorization.

39998704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499927 (or 2499921 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 39998704 is about 6324.4528617106. The cubic root of 39998704 is about 341.9914957474.

The spelling of 39998704 in words is "thirty-nine million, nine hundred ninety-eight thousand, seven hundred four".