39899563 has 24 divisors (see below), whose sum is σ = 47661120. Its totient is φ = 33032160.

The previous prime is 39899543. The next prime is 39899567. The reversal of 39899563 is 36599893.

It is a happy number.

It is not a de Polignac number, because 39899563 - 2²¹ = 37802411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39899563.

It is not an unprimeable number, because it can be changed into a prime (39899567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175656 + ... + 175882.

It is an arithmetic number, because the mean of its divisors is an integer number (1985880).

Almost surely, 2^39899563 is an apocalyptic number.

39899563 is a deficient number, since it is larger than the sum of its proper divisors (7761557).

39899563 is a wasteful number, since it uses less digits than its factorization.

39899563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 286 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 52.

The square root of 39899563 is about 6316.6100876974. The cubic root of 39899563 is about 341.7087080001.

The spelling of 39899563 in words is "thirty-nine million, eight hundred ninety-nine thousand, five hundred sixty-three".