349890673 has 4 divisors (see below), whose sum is σ = 381698928. Its totient is φ = 318082420.

The previous prime is 349890649. The next prime is 349890677. The reversal of 349890673 is 376098943.

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 349890673 - 2⁵ = 349890641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349890677) 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, 15904111 + ... + 15904132.

It is an arithmetic number, because the mean of its divisors is an integer number (95424732).

Almost surely, 2^349890673 is an apocalyptic number.

It is an amenable number.

349890673 is a deficient number, since it is larger than the sum of its proper divisors (31808255).

349890673 is a wasteful number, since it uses less digits than its factorization.

349890673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31808254.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 349890673 is about 18705.3648186824. The cubic root of 349890673 is about 704.6564884195.

The spelling of 349890673 in words is "three hundred forty-nine million, eight hundred ninety thousand, six hundred seventy-three".