139215 has 8 divisors (see below), whose sum is σ = 222768. Its totient is φ = 74240.

The previous prime is 139201. The next prime is 139241. The reversal of 139215 is 512931.

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

It is not a de Polignac number, because 139215 - 2⁴ = 139199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139191 and 139200.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4626 + ... + 4655.

It is an arithmetic number, because the mean of its divisors is an integer number (27846).

2¹³⁹²¹⁵ is an apocalyptic number.

139215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139215 is a deficient number, since it is larger than the sum of its proper divisors (83553).

139215 is an equidigital number, since it uses as much as digits as its factorization.

139215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289.

The product of its digits is 270, while the sum is 21.

The square root of 139215 is about 373.1152636921. The cubic root of 139215 is about 51.8277088725.

The spelling of 139215 in words is "one hundred thirty-nine thousand, two hundred fifteen".