39800643 has 8 divisors (see below), whose sum is σ = 53106000. Its totient is φ = 26514528.

The previous prime is 39800639. The next prime is 39800647. The reversal of 39800643 is 34600893.

It is an interprime number because it is at equal distance from previous prime (39800639) and next prime (39800647).

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

It is not a de Polignac number, because 39800643 - 2² = 39800639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39800647) 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, 1033 + ... + 8981.

It is an arithmetic number, because the mean of its divisors is an integer number (6638250).

Almost surely, 2^39800643 is an apocalyptic number.

39800643 is a deficient number, since it is larger than the sum of its proper divisors (13305357).

39800643 is a wasteful number, since it uses less digits than its factorization.

39800643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9621.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 39800643 is about 6308.7750792052. The cubic root of 39800643 is about 341.4260833671.

The spelling of 39800643 in words is "thirty-nine million, eight hundred thousand, six hundred forty-three".