354345397 has 4 divisors (see below), whose sum is σ = 404966176. Its totient is φ = 303724620.

The previous prime is 354345323. The next prime is 354345419. The reversal of 354345397 is 793543453.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 354345397 - 2¹⁹ = 353821109 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 (354345317) 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, 25310379 + ... + 25310392.

It is an arithmetic number, because the mean of its divisors is an integer number (101241544).

Almost surely, 2^354345397 is an apocalyptic number.

It is an amenable number.

354345397 is a deficient number, since it is larger than the sum of its proper divisors (50620779).

354345397 is an equidigital number, since it uses as much as digits as its factorization.

354345397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50620778.

The product of its digits is 680400, while the sum is 43.

The square root of 354345397 is about 18824.0643060950. The cubic root of 354345397 is about 707.6343916811.

The spelling of 354345397 in words is "three hundred fifty-four million, three hundred forty-five thousand, three hundred ninety-seven".