353978 has 4 divisors (see below), whose sum is σ = 530970. Its totient is φ = 176988.

The previous prime is 353963. The next prime is 354001. The reversal of 353978 is 879353.

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

It can be written as a sum of positive squares in only one way, i.e., 344569 + 9409 = 587^2 + 97^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 353978.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 88493 + ... + 88496.

2³⁵³⁹⁷⁸ is an apocalyptic number.

353978 is a deficient number, since it is larger than the sum of its proper divisors (176992).

353978 is a wasteful number, since it uses less digits than its factorization.

353978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176991.

The product of its digits is 22680, while the sum is 35.

The square root of 353978 is about 594.9605028907. The cubic root of 353978 is about 70.7389740879.

It can be divided in two parts, 353 and 978, that added together give a palindrome (1331).

The spelling of 353978 in words is "three hundred fifty-three thousand, nine hundred seventy-eight".