139628973 has 16 divisors (see below), whose sum is σ = 215044416. Its totient is φ = 79645440.

The previous prime is 139628953. The next prime is 139629001. The reversal of 139628973 is 379826931.

It is not a de Polignac number, because 139628973 - 2¹³ = 139620781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139628933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123886 + ... + 125007.

It is an arithmetic number, because the mean of its divisors is an integer number (13440276).

Almost surely, 2^139628973 is an apocalyptic number.

It is an amenable number.

139628973 is a deficient number, since it is larger than the sum of its proper divisors (75415443).

139628973 is a wasteful number, since it uses less digits than its factorization.

139628973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248924.

The product of its digits is 489888, while the sum is 48.

The square root of 139628973 is about 11816.4704120985. The cubic root of 139628973 is about 518.7903006770.

The spelling of 139628973 in words is "one hundred thirty-nine million, six hundred twenty-eight thousand, nine hundred seventy-three".