139364291 has 12 divisors (see below), whose sum is σ = 159848976. Its totient is φ = 121183920.

The previous prime is 139364261. The next prime is 139364293. The reversal of 139364291 is 192463931.

It is not a de Polignac number, because 139364291 - 2¹⁰ = 139363267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139364293) 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, 22256 + ... + 27821.

It is an arithmetic number, because the mean of its divisors is an integer number (13320748).

Almost surely, 2^139364291 is an apocalyptic number.

139364291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139364291 is a deficient number, since it is larger than the sum of its proper divisors (20484685).

139364291 is a wasteful number, since it uses less digits than its factorization.

139364291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50122 (or 50111 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 139364291 is about 11805.2653930354. The cubic root of 139364291 is about 518.4622853954.

The spelling of 139364291 in words is "one hundred thirty-nine million, three hundred sixty-four thousand, two hundred ninety-one".