349940740 has 24 divisors (see below), whose sum is σ = 752801112. Its totient is φ = 136561920.

The previous prime is 349940719. The next prime is 349940761. The reversal of 349940740 is 47049943.

It is an interprime number because it is at equal distance from previous prime (349940719) and next prime (349940761).

It can be written as a sum of positive squares in 4 ways, for example, as 19501056 + 330439684 = 4416^2 + 18178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 349940693 and 349940702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212559 + ... + 214198.

It is an arithmetic number, because the mean of its divisors is an integer number (31366713).

Almost surely, 2^349940740 is an apocalyptic number.

It is an amenable number.

349940740 is an abundant number, since it is smaller than the sum of its proper divisors (402860372).

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

349940740 is a wasteful number, since it uses less digits than its factorization.

349940740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426807 (or 426805 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 349940740 is about 18706.7030767049. The cubic root of 349940740 is about 704.6900973498.

The spelling of 349940740 in words is "three hundred forty-nine million, nine hundred forty thousand, seven hundred forty".