139380361 has 16 divisors (see below), whose sum is σ = 146522880. Its totient is φ = 132462720.

The previous prime is 139380359. The next prime is 139380379. The reversal of 139380361 is 163083931.

It is a cyclic number.

It is not a de Polignac number, because 139380361 - 2¹ = 139380359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139680361) 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, 379600 + ... + 379966.

It is an arithmetic number, because the mean of its divisors is an integer number (9157680).

Almost surely, 2^139380361 is an apocalyptic number.

It is an amenable number.

139380361 is a deficient number, since it is larger than the sum of its proper divisors (7142519).

139380361 is a wasteful number, since it uses less digits than its factorization.

139380361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 139380361 is about 11805.9460019094. The cubic root of 139380361 is about 518.4822124720.

The spelling of 139380361 in words is "one hundred thirty-nine million, three hundred eighty thousand, three hundred sixty-one".