139955 has 8 divisors (see below), whose sum is σ = 175392. Its totient is φ = 107008.

The previous prime is 139943. The next prime is 139967. The reversal of 139955 is 559931.

139955 = T₂₆ + T₂₇ + ... + T₉₄.

It is an interprime number because it is at equal distance from previous prime (139943) and next prime (139967).

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 139955 - 2⁴ = 139939 is a prime.

It is a Duffinian number.

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, 494 + ... + 723.

It is an arithmetic number, because the mean of its divisors is an integer number (21924).

2¹³⁹⁹⁵⁵ is an apocalyptic number.

139955 is a deficient number, since it is larger than the sum of its proper divisors (35437).

139955 is a wasteful number, since it uses less digits than its factorization.

139955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245.

The product of its digits is 6075, while the sum is 32.

The square root of 139955 is about 374.1056000650. The cubic root of 139955 is about 51.9193770358.

The spelling of 139955 in words is "one hundred thirty-nine thousand, nine hundred fifty-five".