354639 has 4 divisors (see below), whose sum is σ = 472856. Its totient is φ = 236424.

The previous prime is 354619. The next prime is 354643. The reversal of 354639 is 936453.

It is a happy number.

354639 is nontrivially palindromic in base 13.

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

It is not a de Polignac number, because 354639 - 2⁸ = 354383 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354619) 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, 59104 + ... + 59109.

It is an arithmetic number, because the mean of its divisors is an integer number (118214).

2³⁵⁴⁶³⁹ is an apocalyptic number.

354639 is a deficient number, since it is larger than the sum of its proper divisors (118217).

354639 is a wasteful number, since it uses less digits than its factorization.

354639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118216.

The product of its digits is 9720, while the sum is 30.

The square root of 354639 is about 595.5157428650. The cubic root of 354639 is about 70.7829781288.

The spelling of 354639 in words is "three hundred fifty-four thousand, six hundred thirty-nine".