139928983 has 4 divisors (see below), whose sum is σ = 140180760. Its totient is φ = 139677208.

The previous prime is 139928969. The next prime is 139928993. The reversal of 139928983 is 389829931.

139928983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389829931 = 131 ⋅2975801.

It is a cyclic number.

It is not a de Polignac number, because 139928983 - 2⁵ = 139928951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139928983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139928933) 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, 125053 + ... + 126166.

It is an arithmetic number, because the mean of its divisors is an integer number (35045190).

Almost surely, 2^139928983 is an apocalyptic number.

139928983 is a deficient number, since it is larger than the sum of its proper divisors (251777).

139928983 is an equidigital number, since it uses as much as digits as its factorization.

139928983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251776.

The product of its digits is 839808, while the sum is 52.

The square root of 139928983 is about 11829.1581695402. The cubic root of 139928983 is about 519.1615964415.

The spelling of 139928983 in words is "one hundred thirty-nine million, nine hundred twenty-eight thousand, nine hundred eighty-three".