349147390 has 32 divisors (see below), whose sum is σ = 645454656. Its totient is φ = 135901440.

The previous prime is 349147387. The next prime is 349147391. The reversal of 349147390 is 93741943.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349147391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205384 + ... + 207076.

It is an arithmetic number, because the mean of its divisors is an integer number (20170458).

Almost surely, 2^349147390 is an apocalyptic number.

349147390 is a deficient number, since it is larger than the sum of its proper divisors (296307266).

349147390 is a wasteful number, since it uses less digits than its factorization.

349147390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 349147390 is about 18685.4860787725. The cubic root of 349147390 is about 704.1571605375.

The spelling of 349147390 in words is "three hundred forty-nine million, one hundred forty-seven thousand, three hundred ninety".