39139998 has 16 divisors (see below), whose sum is σ = 78402816. Its totient is φ = 13026200.

The previous prime is 39139927. The next prime is 39140027. The reversal of 39139998 is 89993193.

It is a self number, because there is not a number n which added to its sum of digits gives 39139998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (4900176).

Almost surely, 2^39139998 is an apocalyptic number.

39139998 is an abundant number, since it is smaller than the sum of its proper divisors (39262818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39139998 is a wasteful number, since it uses less digits than its factorization.

39139998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10239.

The product of its digits is 472392, while the sum is 51.

The square root of 39139998 is about 6256.1967680053. The cubic root of 39139998 is about 339.5264399131.

The spelling of 39139998 in words is "thirty-nine million, one hundred thirty-nine thousand, nine hundred ninety-eight".