349057493 has 4 divisors (see below), whose sum is σ = 367428960. Its totient is φ = 330686028.

The previous prime is 349057487. The next prime is 349057517. The reversal of 349057493 is 394750943.

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 an emirpimes, since its reverse is a distinct semiprime: 394750943 = 53 ⋅7448131.

It is a cyclic number.

It is not a de Polignac number, because 349057493 - 2⁸ = 349057237 is a prime.

It is a super-2 number, since 2×349057493² = 243682266838890098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349057463) 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, 9185705 + ... + 9185742.

It is an arithmetic number, because the mean of its divisors is an integer number (91857240).

Almost surely, 2^349057493 is an apocalyptic number.

It is an amenable number.

349057493 is a deficient number, since it is larger than the sum of its proper divisors (18371467).

349057493 is a wasteful number, since it uses less digits than its factorization.

349057493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18371466.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 349057493 is about 18683.0803937680. The cubic root of 349057493 is about 704.0967208763.

The spelling of 349057493 in words is "three hundred forty-nine million, fifty-seven thousand, four hundred ninety-three".