139086213 has 16 divisors (see below), whose sum is σ = 223096320. Its totient is φ = 75294576.

The previous prime is 139086203. The next prime is 139086223. The reversal of 139086213 is 312680931.

It is an interprime number because it is at equal distance from previous prime (139086203) and next prime (139086223).

It is not a de Polignac number, because 139086213 - 2⁶ = 139086149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139086203) 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, 173895 + ... + 174692.

It is an arithmetic number, because the mean of its divisors is an integer number (13943520).

Almost surely, 2^139086213 is an apocalyptic number.

It is an amenable number.

139086213 is a deficient number, since it is larger than the sum of its proper divisors (84010107).

139086213 is a wasteful number, since it uses less digits than its factorization.

139086213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348616.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 139086213 is about 11793.4818014020. The cubic root of 139086213 is about 518.1172210279.

The spelling of 139086213 in words is "one hundred thirty-nine million, eighty-six thousand, two hundred thirteen".