39873663 has 12 divisors (see below), whose sum is σ = 57652920. Its totient is φ = 26555856.

The previous prime is 39873661. The next prime is 39873677. The reversal of 39873663 is 36637893.

It is a happy number.

It is not a de Polignac number, because 39873663 - 2¹ = 39873661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39873661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12253 + ... + 15161.

It is an arithmetic number, because the mean of its divisors is an integer number (4804410).

Almost surely, 2^39873663 is an apocalyptic number.

39873663 is a deficient number, since it is larger than the sum of its proper divisors (17779257).

39873663 is a wasteful number, since it uses less digits than its factorization.

39873663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4435 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 39873663 is about 6314.5596045963. The cubic root of 39873663 is about 341.6347542142.

The spelling of 39873663 in words is "thirty-nine million, eight hundred seventy-three thousand, six hundred sixty-three".