153979 has 4 divisors (see below), whose sum is σ = 175984. Its totient is φ = 131976.

The previous prime is 153953. The next prime is 153991. The reversal of 153979 is 979351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979351 = 457 ⋅2143.

It is a cyclic number.

It is not a de Polignac number, because 153979 - 2⁵ = 153947 is a prime.

It is a Duffinian number.

153979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (153929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10992 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (43996).

2¹⁵³⁹⁷⁹ is an apocalyptic number.

153979 is a deficient number, since it is larger than the sum of its proper divisors (22005).

153979 is an equidigital number, since it uses as much as digits as its factorization.

153979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22004.

The product of its digits is 8505, while the sum is 34.

The square root of 153979 is about 392.4015800172. The cubic root of 153979 is about 53.5986475860.

It can be divided in two parts, 15 and 3979, that multiplied together give a triangular number (59685 = T₃₄₅).

The spelling of 153979 in words is "one hundred fifty-three thousand, nine hundred seventy-nine".