139865363 has 8 divisors (see below), whose sum is σ = 153373296. Its totient is φ = 126489600.

The previous prime is 139865353. The next prime is 139865387. The reversal of 139865363 is 363568931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139865363 - 2¹⁴ = 139848979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139865303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30818 + ... + 35063.

It is an arithmetic number, because the mean of its divisors is an integer number (19171662).

Almost surely, 2^139865363 is an apocalyptic number.

139865363 is a deficient number, since it is larger than the sum of its proper divisors (13507933).

139865363 is a wasteful number, since it uses less digits than its factorization.

139865363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66085.

The product of its digits is 349920, while the sum is 44.

The square root of 139865363 is about 11826.4687459951. The cubic root of 139865363 is about 519.0829039815.

The spelling of 139865363 in words is "one hundred thirty-nine million, eight hundred sixty-five thousand, three hundred sixty-three".