139680223 has 4 divisors (see below), whose sum is σ = 139719688. Its totient is φ = 139640760.

The previous prime is 139680221. The next prime is 139680241. The reversal of 139680223 is 322086931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322086931 = 31 ⋅10389901.

It is a cyclic number.

It is not a de Polignac number, because 139680223 - 2¹ = 139680221 is a prime.

It is a super-3 number, since 3×139680223³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139680221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13836 + ... + 21697.

It is an arithmetic number, because the mean of its divisors is an integer number (34929922).

Almost surely, 2^139680223 is an apocalyptic number.

139680223 is a deficient number, since it is larger than the sum of its proper divisors (39465).

139680223 is an equidigital number, since it uses as much as digits as its factorization.

139680223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39464.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 139680223 is about 11818.6387964097. The cubic root of 139680223 is about 518.8537658973.

The spelling of 139680223 in words is "one hundred thirty-nine million, six hundred eighty thousand, two hundred twenty-three".