139938748 has 12 divisors (see below), whose sum is σ = 247060800. Its totient is φ = 69349952.

The previous prime is 139938719. The next prime is 139938749. The reversal of 139938748 is 847839931.

It is a junction number, because it is equal to n+sod(n) for n = 139938695 and 139938704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139938749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154348 + ... + 155251.

It is an arithmetic number, because the mean of its divisors is an integer number (20588400).

Almost surely, 2^139938748 is an apocalyptic number.

It is an amenable number.

139938748 is a deficient number, since it is larger than the sum of its proper divisors (107122052).

139938748 is a wasteful number, since it uses less digits than its factorization.

139938748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309716 (or 309714 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 139938748 is about 11829.5709136046. The cubic root of 139938748 is about 519.1736727937.

The spelling of 139938748 in words is "one hundred thirty-nine million, nine hundred thirty-eight thousand, seven hundred forty-eight".