139002945 has 16 divisors (see below), whose sum is σ = 230074560. Its totient is φ = 71578304.

The previous prime is 139002943. The next prime is 139002947. The reversal of 139002945 is 549200931.

It is an interprime number because it is at equal distance from previous prime (139002943) and next prime (139002947).

It is a cyclic number.

It is not a de Polignac number, because 139002945 - 2¹ = 139002943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139002943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159339 + ... + 160208.

It is an arithmetic number, because the mean of its divisors is an integer number (14379660).

Almost surely, 2^139002945 is an apocalyptic number.

139002945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139002945 is a deficient number, since it is larger than the sum of its proper divisors (91071615).

139002945 is a wasteful number, since it uses less digits than its factorization.

139002945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319584.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 139002945 is about 11789.9510177100. The cubic root of 139002945 is about 518.0138050812.

The spelling of 139002945 in words is "one hundred thirty-nine million, two thousand, nine hundred forty-five".