139549380 has 24 divisors (see below), whose sum is σ = 390738432. Its totient is φ = 37213152.

The previous prime is 139549373. The next prime is 139549381. The reversal of 139549380 is 83945931.

139549380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139549381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162852 + ... + 1162971.

It is an arithmetic number, because the mean of its divisors is an integer number (16280768).

Almost surely, 2^139549380 is an apocalyptic number.

139549380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139549380 is an abundant number, since it is smaller than the sum of its proper divisors (251189052).

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

139549380 is a wasteful number, since it uses less digits than its factorization.

139549380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325835 (or 2325833 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 139549380 is about 11813.1020481498. The cubic root of 139549380 is about 518.6917062284.

The spelling of 139549380 in words is "one hundred thirty-nine million, five hundred forty-nine thousand, three hundred eighty".