349980738 has 16 divisors (see below), whose sum is σ = 700303296. Its totient is φ = 116603280.

The previous prime is 349980737. The next prime is 349980739. The reversal of 349980738 is 837089943.

It is an interprime number because it is at equal distance from previous prime (349980737) and next prime (349980739).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (349980737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195 + ... + 26457.

It is an arithmetic number, because the mean of its divisors is an integer number (43768956).

Almost surely, 2^349980738 is an apocalyptic number.

349980738 is an abundant number, since it is smaller than the sum of its proper divisors (350322558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349980738 is a wasteful number, since it uses less digits than its factorization.

349980738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28489.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 349980738 is about 18707.7721281824. The cubic root of 349980738 is about 704.7169448676.

The spelling of 349980738 in words is "three hundred forty-nine million, nine hundred eighty thousand, seven hundred thirty-eight".