139449210 has 16 divisors (see below), whose sum is σ = 334678176. Its totient is φ = 37186448.

The previous prime is 139449209. The next prime is 139449217. The reversal of 139449210 is 12944931.

It is not an unprimeable number, because it can be changed into a prime (139449217) 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, 2324124 + ... + 2324183.

It is an arithmetic number, because the mean of its divisors is an integer number (20917386).

Almost surely, 2^139449210 is an apocalyptic number.

139449210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139449210 is an abundant number, since it is smaller than the sum of its proper divisors (195228966).

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

139449210 is a wasteful number, since it uses less digits than its factorization.

139449210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648317.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 139449210 is about 11808.8615031255. The cubic root of 139449210 is about 518.5675690830.

The spelling of 139449210 in words is "one hundred thirty-nine million, four hundred forty-nine thousand, two hundred ten".