139963220 has 12 divisors (see below), whose sum is σ = 293922804. Its totient is φ = 55985280.

The previous prime is 139963183. The next prime is 139963247. The reversal of 139963220 is 22369931.

139963220 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 104489284 + 35473936 = 10222^2 + 5956^2 .

It is a congruent number.

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, 3499061 + ... + 3499100.

It is an arithmetic number, because the mean of its divisors is an integer number (24493567).

Almost surely, 2^139963220 is an apocalyptic number.

139963220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139963220 is an abundant number, since it is smaller than the sum of its proper divisors (153959584).

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

139963220 is a wasteful number, since it uses less digits than its factorization.

139963220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998170 (or 6998168 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 139963220 is about 11830.6052254312. The cubic root of 139963220 is about 519.2039347899.

The spelling of 139963220 in words is "one hundred thirty-nine million, nine hundred sixty-three thousand, two hundred twenty".