349806434 has 4 divisors (see below), whose sum is σ = 524709654. Its totient is φ = 174903216.

The previous prime is 349806407. The next prime is 349806461. The reversal of 349806434 is 434608943.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (349806407) and next prime (349806461).

It can be written as a sum of positive squares in only one way, i.e., 349802209 + 4225 = 18703^2 + 65^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 349806391 and 349806400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87451607 + ... + 87451610.

Almost surely, 2^349806434 is an apocalyptic number.

349806434 is a deficient number, since it is larger than the sum of its proper divisors (174903220).

349806434 is a wasteful number, since it uses less digits than its factorization.

349806434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174903219.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 349806434 is about 18703.1129494531. The cubic root of 349806434 is about 704.5999333039.

It can be divided in two parts, 34980 and 6434, that added together give a palindrome (41414).

The spelling of 349806434 in words is "three hundred forty-nine million, eight hundred six thousand, four hundred thirty-four".