139771269 has 12 divisors (see below), whose sum is σ = 220245792. Its totient is φ = 84709800.

The previous prime is 139771243. The next prime is 139771273. The reversal of 139771269 is 962177931.

It is not a de Polignac number, because 139771269 - 2⁷ = 139771141 is a prime.

It is a super-2 number, since 2×139771269² = 39072015275740722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139771369) 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 11 ways as a sum of consecutive naturals, for example, 705817 + ... + 706014.

It is an arithmetic number, because the mean of its divisors is an integer number (18353816).

Almost surely, 2^139771269 is an apocalyptic number.

It is an amenable number.

139771269 is a deficient number, since it is larger than the sum of its proper divisors (80474523).

139771269 is a wasteful number, since it uses less digits than its factorization.

139771269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411848 (or 1411845 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 139771269 is about 11822.4899661620. The cubic root of 139771269 is about 518.9664740503.

The spelling of 139771269 in words is "one hundred thirty-nine million, seven hundred seventy-one thousand, two hundred sixty-nine".