352406909 has 4 divisors (see below), whose sum is σ = 352451520. Its totient is φ = 352362300.

The previous prime is 352406863. The next prime is 352406921. The reversal of 352406909 is 909604253.

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, and also an emirpimes, since its reverse is a distinct semiprime: 909604253 = 23 ⋅39548011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352406909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352406959) 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, 6917 + ... + 27434.

It is an arithmetic number, because the mean of its divisors is an integer number (88112880).

Almost surely, 2^352406909 is an apocalyptic number.

It is an amenable number.

352406909 is a deficient number, since it is larger than the sum of its proper divisors (44611).

352406909 is a wasteful number, since it uses less digits than its factorization.

352406909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44610.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 352406909 is about 18772.5040684508. The cubic root of 352406909 is about 706.3416324681.

The spelling of 352406909 in words is "three hundred fifty-two million, four hundred six thousand, nine hundred nine".