354203989 has 4 divisors (see below), whose sum is σ = 355026240. Its totient is φ = 353381740.

The previous prime is 354203987. The next prime is 354204001. The reversal of 354203989 is 989302453.

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.

It is a cyclic number.

It is not a de Polignac number, because 354203989 - 2¹ = 354203987 is a prime.

It is a super-3 number, since 3×354203989³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354203987) 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, 410479 + ... + 411340.

It is an arithmetic number, because the mean of its divisors is an integer number (88756560).

Almost surely, 2^354203989 is an apocalyptic number.

It is an amenable number.

354203989 is a deficient number, since it is larger than the sum of its proper divisors (822251).

354203989 is an equidigital number, since it uses as much as digits as its factorization.

354203989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822250.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 354203989 is about 18820.3078880235. The cubic root of 354203989 is about 707.5402476823.

It can be divided in two parts, 35 and 4203989, that added together give a palindrome (4204024).

The spelling of 354203989 in words is "three hundred fifty-four million, two hundred three thousand, nine hundred eighty-nine".