139965198 has 16 divisors (see below), whose sum is σ = 280422480. Its totient is φ = 46573056.

The previous prime is 139965193. The next prime is 139965253. The reversal of 139965198 is 891569931.

It is a happy number.

139965198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139965198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139965193) 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, 16753 + ... + 23676.

It is an arithmetic number, because the mean of its divisors is an integer number (17526405).

Almost surely, 2^139965198 is an apocalyptic number.

139965198 is an abundant number, since it is smaller than the sum of its proper divisors (140457282).

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

139965198 is a wasteful number, since it uses less digits than its factorization.

139965198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41011.

The product of its digits is 524880, while the sum is 51.

The square root of 139965198 is about 11830.6888218734. The cubic root of 139965198 is about 519.2063806242.

The spelling of 139965198 in words is "one hundred thirty-nine million, nine hundred sixty-five thousand, one hundred ninety-eight".