139949211 has 16 divisors (see below), whose sum is σ = 189593600. Its totient is φ = 91810368.

The previous prime is 139949209. The next prime is 139949213. The reversal of 139949211 is 112949931.

It is an interprime number because it is at equal distance from previous prime (139949209) and next prime (139949213).

It is not a de Polignac number, because 139949211 - 2¹ = 139949209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139949211.

It is not an unprimeable number, because it can be changed into a prime (139949213) 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, 86175 + ... + 87783.

It is an arithmetic number, because the mean of its divisors is an integer number (11849600).

Almost surely, 2^139949211 is an apocalyptic number.

139949211 is a deficient number, since it is larger than the sum of its proper divisors (49644389).

139949211 is a wasteful number, since it uses less digits than its factorization.

139949211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058.

The product of its digits is 17496, while the sum is 39.

The square root of 139949211 is about 11830.0131445405. The cubic root of 139949211 is about 519.1866117374.

The spelling of 139949211 in words is "one hundred thirty-nine million, nine hundred forty-nine thousand, two hundred eleven".