354212009 has 4 divisors (see below), whose sum is σ = 354251520. Its totient is φ = 354172500.

The previous prime is 354211999. The next prime is 354212011. The reversal of 354212009 is 900212453.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 354212009 - 2¹⁶ = 354146473 is a prime.

It is a super-3 number, since 3×354212009³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354212099) 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, 872 + ... + 26630.

It is an arithmetic number, because the mean of its divisors is an integer number (88562880).

Almost surely, 2^354212009 is an apocalyptic number.

It is an amenable number.

354212009 is a deficient number, since it is larger than the sum of its proper divisors (39511).

354212009 is a wasteful number, since it uses less digits than its factorization.

354212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39510.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 354212009 is about 18820.5209545326. The cubic root of 354212009 is about 707.5455877595.

It can be divided in two parts, 3542 and 12009, that added together give a palindrome (15551).

The spelling of 354212009 in words is "three hundred fifty-four million, two hundred twelve thousand, nine".