354989 has 4 divisors (see below), whose sum is σ = 367260. Its totient is φ = 342720.

The previous prime is 354983. The next prime is 354997. The reversal of 354989 is 989453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989453 = 41 ⋅24133.

It can be written as a sum of positive squares in 2 ways, for example, as 136900 + 218089 = 370^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 354989 - 2⁴ = 354973 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354983) 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, 6092 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (91815).

2³⁵⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

354989 is a deficient number, since it is larger than the sum of its proper divisors (12271).

354989 is a wasteful number, since it uses less digits than its factorization.

354989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12270.

The product of its digits is 38880, while the sum is 38.

The square root of 354989 is about 595.8095333242. The cubic root of 354989 is about 70.8062561635.

The spelling of 354989 in words is "three hundred fifty-four thousand, nine hundred eighty-nine".