139890289 has 32 divisors (see below), whose sum is σ = 178848000. Its totient is φ = 106275840.

The previous prime is 139890253. The next prime is 139890323. The reversal of 139890289 is 982098931.

It is not a de Polignac number, because 139890289 - 2¹⁹ = 139366001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139890589) 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 31 ways as a sum of consecutive naturals, for example, 938787 + ... + 938935.

It is an arithmetic number, because the mean of its divisors is an integer number (5589000).

Almost surely, 2^139890289 is an apocalyptic number.

It is an amenable number.

139890289 is a deficient number, since it is larger than the sum of its proper divisors (38957711).

139890289 is a wasteful number, since it uses less digits than its factorization.

139890289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 139890289 is about 11827.5225216442. The cubic root of 139890289 is about 519.1137381390.

The spelling of 139890289 in words is "one hundred thirty-nine million, eight hundred ninety thousand, two hundred eighty-nine".