139990780 has 12 divisors (see below), whose sum is σ = 293980680. Its totient is φ = 55996304.

The previous prime is 139990759. The next prime is 139990787. The reversal of 139990780 is 87099931.

It is a self number, because there is not a number n which added to its sum of digits gives 139990780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139990787) 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 3 ways as a sum of consecutive naturals, for example, 3499750 + ... + 3499789.

It is an arithmetic number, because the mean of its divisors is an integer number (24498390).

Almost surely, 2^139990780 is an apocalyptic number.

139990780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139990780 is an abundant number, since it is smaller than the sum of its proper divisors (153989900).

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

139990780 is a wasteful number, since it uses less digits than its factorization.

139990780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999548 (or 6999546 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 139990780 is about 11831.7699436728. The cubic root of 139990780 is about 519.2380111740.

The spelling of 139990780 in words is "one hundred thirty-nine million, nine hundred ninety thousand, seven hundred eighty".