349690826 has 4 divisors (see below), whose sum is σ = 524536242. Its totient is φ = 174845412.

The previous prime is 349690823. The next prime is 349690841. The reversal of 349690826 is 628096943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628096943 = 17 ⋅36946879.

It can be written as a sum of positive squares in only one way, i.e., 306775225 + 42915601 = 17515^2 + 6551^2 .

It is not an unprimeable number, because it can be changed into a prime (349690823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87422705 + ... + 87422708.

Almost surely, 2^349690826 is an apocalyptic number.

349690826 is a deficient number, since it is larger than the sum of its proper divisors (174845416).

349690826 is a wasteful number, since it uses less digits than its factorization.

349690826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174845415.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 349690826 is about 18700.0220855485. The cubic root of 349690826 is about 704.5223033573.

The spelling of 349690826 in words is "three hundred forty-nine million, six hundred ninety thousand, eight hundred twenty-six".