139349460 has 24 divisors (see below), whose sum is σ = 390178656. Its totient is φ = 37159840.

The previous prime is 139349423. The next prime is 139349467. The reversal of 139349460 is 64943931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139349467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161186 + ... + 1161305.

It is an arithmetic number, because the mean of its divisors is an integer number (16257444).

Almost surely, 2^139349460 is an apocalyptic number.

139349460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139349460 is an abundant number, since it is smaller than the sum of its proper divisors (250829196).

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

139349460 is a wasteful number, since it uses less digits than its factorization.

139349460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322503 (or 2322501 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 139349460 is about 11804.6372244131. The cubic root of 139349460 is about 518.4438933408.

The spelling of 139349460 in words is "one hundred thirty-nine million, three hundred forty-nine thousand, four hundred sixty".