141989 has 4 divisors (see below), whose sum is σ = 143424. Its totient is φ = 140556.

The previous prime is 141971. The next prime is 141991. The reversal of 141989 is 989141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989141 = 167 ⋅5923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141989 is a prime.

It is a super-2 number, since 2×141989² = 40321752242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141959) 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, 557 + ... + 770.

It is an arithmetic number, because the mean of its divisors is an integer number (35856).

2¹⁴¹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

141989 is a deficient number, since it is larger than the sum of its proper divisors (1435).

141989 is a wasteful number, since it uses less digits than its factorization.

141989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its digits is 2592, while the sum is 32.

The square root of 141989 is about 376.8142778611. The cubic root of 141989 is about 52.1696872886.

The spelling of 141989 in words is "one hundred forty-one thousand, nine hundred eighty-nine".