274989 has 16 divisors (see below), whose sum is σ = 431424. Its totient is φ = 153600.

The previous prime is 274973. The next prime is 274993. The reversal of 274989 is 989472.

It is not a de Polignac number, because 274989 - 2⁴ = 274973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109 + ... + 749.

It is an arithmetic number, because the mean of its divisors is an integer number (26964).

2²⁷⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

274989 is a deficient number, since it is larger than the sum of its proper divisors (156435).

274989 is a wasteful number, since it uses less digits than its factorization.

274989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its digits is 36288, while the sum is 39.

The square root of 274989 is about 524.3939358917. The cubic root of 274989 is about 65.0287052700.

The spelling of 274989 in words is "two hundred seventy-four thousand, nine hundred eighty-nine".