349940718 has 24 divisors (see below), whose sum is σ = 765295128. Its totient is φ = 115556112.

The previous prime is 349940687. The next prime is 349940719. The reversal of 349940718 is 817049943.

It is a super-2 number, since 2×349940718² = 244917012228711048, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349940719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88921 + ... + 92772.

It is an arithmetic number, because the mean of its divisors is an integer number (31887297).

Almost surely, 2^349940718 is an apocalyptic number.

349940718 is an abundant number, since it is smaller than the sum of its proper divisors (415354410).

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

349940718 is a wasteful number, since it uses less digits than its factorization.

349940718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181808 (or 181805 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 349940718 is about 18706.7024886804. The cubic root of 349940718 is about 704.6900825824.

The spelling of 349940718 in words is "three hundred forty-nine million, nine hundred forty thousand, seven hundred eighteen".