354397865 has 4 divisors (see below), whose sum is σ = 425277444. Its totient is φ = 283518288.

The previous prime is 354397847. The next prime is 354397903. The reversal of 354397865 is 568793453.

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 99420841 + 254977024 = 9971^2 + 15968^2 .

It is a cyclic number.

It is not a de Polignac number, because 354397865 - 2⁶ = 354397801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35439782 + ... + 35439791.

It is an arithmetic number, because the mean of its divisors is an integer number (106319361).

Almost surely, 2^354397865 is an apocalyptic number.

It is an amenable number.

354397865 is a deficient number, since it is larger than the sum of its proper divisors (70879579).

354397865 is an equidigital number, since it uses as much as digits as its factorization.

354397865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70879578.

The product of its digits is 2721600, while the sum is 50.

The square root of 354397865 is about 18825.4578961575. The cubic root of 354397865 is about 707.6693164835.

The spelling of 354397865 in words is "three hundred fifty-four million, three hundred ninety-seven thousand, eight hundred sixty-five".