139285798 has 4 divisors (see below), whose sum is σ = 208928700. Its totient is φ = 69642898.

The previous prime is 139285781. The next prime is 139285813. The reversal of 139285798 is 897582931.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34821448 + ... + 34821451.

It is an arithmetic number, because the mean of its divisors is an integer number (52232175).

Almost surely, 2^139285798 is an apocalyptic number.

139285798 is a deficient number, since it is larger than the sum of its proper divisors (69642902).

139285798 is an equidigital number, since it uses as much as digits as its factorization.

139285798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69642901.

The product of its digits is 1088640, while the sum is 52.

The square root of 139285798 is about 11801.9404336745. The cubic root of 139285798 is about 518.3649307036.

The spelling of 139285798 in words is "one hundred thirty-nine million, two hundred eighty-five thousand, seven hundred ninety-eight".