39838970 has 8 divisors (see below), whose sum is σ = 71710164. Its totient is φ = 15935584.

The previous prime is 39838963. The next prime is 39838979. The reversal of 39838970 is 7983893.

It can be written as a sum of positive squares in 2 ways, for example, as 38278969 + 1560001 = 6187^2 + 1249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (39838979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991939 + ... + 1991958.

Almost surely, 2^39838970 is an apocalyptic number.

39838970 is a deficient number, since it is larger than the sum of its proper divisors (31871194).

39838970 is a wasteful number, since it uses less digits than its factorization.

39838970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983904.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 39838970 is about 6311.8119426992. The cubic root of 39838970 is about 341.5356430653.

The spelling of 39838970 in words is "thirty-nine million, eight hundred thirty-eight thousand, nine hundred seventy".