354338509 has 8 divisors (see below), whose sum is σ = 408147968. Its totient is φ = 301326480.

The previous prime is 354338489. The next prime is 354338513. The reversal of 354338509 is 905833453.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 354338509 - 2¹⁵ = 354305741 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 (354338609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198402 + ... + 200179.

It is an arithmetic number, because the mean of its divisors is an integer number (51018496).

Almost surely, 2^354338509 is an apocalyptic number.

It is an amenable number.

354338509 is a deficient number, since it is larger than the sum of its proper divisors (53809459).

354338509 is a wasteful number, since it uses less digits than its factorization.

354338509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398715.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 354338509 is about 18823.8813479048. The cubic root of 354338509 is about 707.6298064965.

The spelling of 354338509 in words is "three hundred fifty-four million, three hundred thirty-eight thousand, five hundred nine".