139419218 has 8 divisors (see below), whose sum is σ = 209729100. Its totient is φ = 69509520.

The previous prime is 139419209. The next prime is 139419233. The reversal of 139419218 is 812914931.

139419218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 135326689 + 4092529 = 11633^2 + 2023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99173 + ... + 100568.

Almost surely, 2^139419218 is an apocalyptic number.

139419218 is a deficient number, since it is larger than the sum of its proper divisors (70309882).

139419218 is a wasteful number, since it uses less digits than its factorization.

139419218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200092.

The product of its digits is 15552, while the sum is 38.

The square root of 139419218 is about 11807.5915410383. The cubic root of 139419218 is about 518.5303894923.

The spelling of 139419218 in words is "one hundred thirty-nine million, four hundred nineteen thousand, two hundred eighteen".