153983 has 4 divisors (see below), whose sum is σ = 157608. Its totient is φ = 150360.

The previous prime is 153953. The next prime is 153991. The reversal of 153983 is 389351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 153983 - 2¹⁰ = 152959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153913) 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, 1748 + ... + 1833.

It is an arithmetic number, because the mean of its divisors is an integer number (39402).

2¹⁵³⁹⁸³ is an apocalyptic number.

153983 is a deficient number, since it is larger than the sum of its proper divisors (3625).

153983 is an equidigital number, since it uses as much as digits as its factorization.

153983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its digits is 3240, while the sum is 29.

The square root of 153983 is about 392.4066768035. The cubic root of 153983 is about 53.5991117028.

The spelling of 153983 in words is "one hundred fifty-three thousand, nine hundred eighty-three".