139899209420 has 24 divisors (see below), whose sum is σ = 311070007584. Its totient is φ = 52667937536.

The previous prime is 139899209371. The next prime is 139899209477. The reversal of 139899209420 is 24902998931.

It is a super-3 number, since 3×139899209420³ (a number of 34 digits) contains 333 as substring.

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, 205733792 + ... + 205734471.

It is an arithmetic number, because the mean of its divisors is an integer number (12961250316).

Almost surely, 2^139899209420 is an apocalyptic number.

139899209420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139899209420 is an abundant number, since it is smaller than the sum of its proper divisors (171170798164).

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

139899209420 is a wasteful number, since it uses less digits than its factorization.

139899209420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411468289 (or 411468287 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 139899209420 in words is "one hundred thirty-nine billion, eight hundred ninety-nine million, two hundred nine thousand, four hundred twenty".