352456789 has 4 divisors (see below), whose sum is σ = 353090124. Its totient is φ = 351823456.

The previous prime is 352456781. The next prime is 352456799. The reversal of 352456789 is 987654253.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64883025 + 287573764 = 8055^2 + 16958^2 .

It is a cyclic number.

It is not a de Polignac number, because 352456789 - 2³ = 352456781 is a prime.

It is a super-2 number, since 2×352456789² = 248451576224381042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352456781) 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, 315832 + ... + 316945.

It is an arithmetic number, because the mean of its divisors is an integer number (88272531).

Almost surely, 2^352456789 is an apocalyptic number.

It is an amenable number.

352456789 is a deficient number, since it is larger than the sum of its proper divisors (633335).

352456789 is an equidigital number, since it uses as much as digits as its factorization.

352456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633334.

The product of its digits is 1814400, while the sum is 49.

The square root of 352456789 is about 18773.8325602419. The cubic root of 352456789 is about 706.3749563120.

The spelling of 352456789 in words is "three hundred fifty-two million, four hundred fifty-six thousand, seven hundred eighty-nine".