349449407 has 4 divisors (see below), whose sum is σ = 349487040. Its totient is φ = 349411776.

The previous prime is 349449403. The next prime is 349449431. The reversal of 349449407 is 704944943.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 704944943 = 503 ⋅1401481.

It is a cyclic number.

It is not a de Polignac number, because 349449407 - 2² = 349449403 is a prime.

It is a super-2 number, since 2×349449407² = 244229776105303298, 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 (349449403) 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, 6194 + ... + 27152.

It is an arithmetic number, because the mean of its divisors is an integer number (87371760).

Almost surely, 2^349449407 is an apocalyptic number.

349449407 is a deficient number, since it is larger than the sum of its proper divisors (37633).

349449407 is a wasteful number, since it uses less digits than its factorization.

349449407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37632.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 349449407 is about 18693.5659252054. The cubic root of 349449407 is about 704.3601370346.

The spelling of 349449407 in words is "three hundred forty-nine million, four hundred forty-nine thousand, four hundred seven".